From 264ea7900d2f2606693b7cf01ddf95cd4bcc8a59 Mon Sep 17 00:00:00 2001
From: amnesiaof <dolombovskyyalexs@gmail.com>
Date: Thu, 18 Jun 2026 20:09:59 +0300
Subject: [PATCH 1/4] feat(app): auto-update linked modpacks before launch and
 in background

---
 .../ui/instance_settings/GeneralSettings.vue  |  37 +++
 apps/app-frontend/src/helpers/profile.ts      |   5 +
 apps/app-frontend/src/helpers/types.d.ts      |   1 +
 .../app-frontend/src/locales/en-US/index.json |   6 +
 apps/app/build.rs                             |   1 +
 apps/app/src/api/profile.rs                   |  18 ++
 apps/app/src/main.rs                          |  13 ++
 apps/frontend/AGENTS.md                       |   1 -
 packages/api-client/AGENTS.md                 |   2 +-
 ...63a1388ef538e4b80680bce4b668b182b4f42.json |  12 -
 ...d0494058373b484ca8ac44a02edb7a4cc444.json} |  10 +-
 ...fa00083022e0a4b0437a3e613c84e76f2d5c.json} |  10 +-
 ...b207c848c1d4cf7c30243b5c2cfd6a6f11597.json |  12 +
 ...20260618000000_add-auto-update-modpack.sql |   1 +
 packages/app-lib/src/api/profile/create.rs    |   1 +
 packages/app-lib/src/api/profile/mod.rs       | 142 ++++++++++++
 .../app-lib/src/state/legacy_converter.rs     |   1 +
 packages/app-lib/src/state/profiles.rs        |  18 +-
 packages/assets/generated-icons.ts            | 217 +++++++++---------
 19 files changed, 377 insertions(+), 131 deletions(-)
 delete mode 100644 packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json
 rename packages/app-lib/.sqlx/{query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json => query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json} (93%)
 rename packages/app-lib/.sqlx/{query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json => query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json} (93%)
 create mode 100644 packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json
 create mode 100644 packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql

diff --git a/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue b/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue
index e30bead729..85a2df3500 100644
--- a/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue
+++ b/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue
@@ -9,6 +9,7 @@ import {
 	injectNotificationManager,
 	OverflowMenu,
 	StyledInput,
+	Toggle,
 	useVIntl,
 } from '@modrinth/ui'
 import { useQueryClient } from '@tanstack/vue-query'
@@ -44,6 +45,21 @@ const releaseChannelDisabledItems = computed<ReleaseChannel[]>(() =>
 	savingReleaseChannel.value ? [...releaseChannelOptions] : [],
 )
 
+const autoUpdateModpack = ref(instance.value.auto_update_modpack ?? false)
+
+const hasLinkedModpack = computed(() => !!instance.value.linked_data)
+
+watch(autoUpdateModpack, async (value) => {
+	await edit(instance.value.path, { auto_update_modpack: value }).catch(handleError)
+})
+
+watch(
+	() => instance.value.auto_update_modpack,
+	(val) => {
+		autoUpdateModpack.value = val ?? false
+	},
+)
+
 const newCategoryInput = ref('')
 
 const installing = computed(() => instance.value.install_stage !== 'installed')
@@ -263,6 +279,15 @@ const messages = defineMessages({
 		id: 'instance.settings.tabs.general.update-channel.select',
 		defaultMessage: 'Select update channel',
 	},
+	autoUpdateModpack: {
+		id: 'instance.settings.tabs.general.auto-update-modpack',
+		defaultMessage: 'Auto-update modpack',
+	},
+	autoUpdateModpackDescription: {
+		id: 'instance.settings.tabs.general.auto-update-modpack.description',
+		defaultMessage:
+			'Automatically update this modpack to the latest version. Updates are checked before launching and periodically in the background.',
+	},
 	deleteInstance: {
 		id: 'instance.settings.tabs.general.delete',
 		defaultMessage: 'Delete instance',
@@ -409,6 +434,18 @@ const messages = defineMessages({
 			</p>
 		</div>
 
+		<div v-if="hasLinkedModpack" class="flex items-center justify-between gap-4 mt-6">
+			<div>
+				<h2 class="m-0 text-lg font-semibold text-contrast">
+					{{ formatMessage(messages.autoUpdateModpack) }}
+				</h2>
+				<p class="m-0 mt-1 text-sm">
+					{{ formatMessage(messages.autoUpdateModpackDescription) }}
+				</p>
+			</div>
+			<Toggle id="auto-update-modpack" v-model="autoUpdateModpack" />
+		</div>
+
 		<div class="flex flex-col gap-2.5 mt-6">
 			<h2 id="delete-instance-label" class="m-0 text-lg font-semibold text-contrast block">
 				{{ formatMessage(messages.deleteInstance) }}
diff --git a/apps/app-frontend/src/helpers/profile.ts b/apps/app-frontend/src/helpers/profile.ts
index be3b62c6ef..d4ffcd4707 100644
--- a/apps/app-frontend/src/helpers/profile.ts
+++ b/apps/app-frontend/src/helpers/profile.ts
@@ -242,6 +242,11 @@ export async function update_managed_modrinth_version(
 	})
 }
 
+// Auto-update all modpacks with auto_update_modpack enabled
+export async function auto_update_all_modpacks(): Promise<void> {
+	return await invoke('plugin:profile|profile_auto_update_all_modpacks')
+}
+
 // Repair a managed Modrinth profile
 export async function update_repair_modrinth(path: string): Promise<void> {
 	return await invoke('plugin:profile|profile_repair_managed_modrinth', { path })
diff --git a/apps/app-frontend/src/helpers/types.d.ts b/apps/app-frontend/src/helpers/types.d.ts
index 143997702f..f659f2d9cc 100644
--- a/apps/app-frontend/src/helpers/types.d.ts
+++ b/apps/app-frontend/src/helpers/types.d.ts
@@ -31,6 +31,7 @@ export type GameInstance = {
 	force_fullscreen?: boolean
 	game_resolution?: [number, number]
 	hooks: Hooks
+	auto_update_modpack?: boolean
 }
 
 type InstallStage =
diff --git a/apps/app-frontend/src/locales/en-US/index.json b/apps/app-frontend/src/locales/en-US/index.json
index cf98dc3a76..cb3cb7e424 100644
--- a/apps/app-frontend/src/locales/en-US/index.json
+++ b/apps/app-frontend/src/locales/en-US/index.json
@@ -665,6 +665,12 @@
   "instance.settings.tabs.general": {
     "message": "General"
   },
+  "instance.settings.tabs.general.auto-update-modpack": {
+    "message": "Auto-update modpack"
+  },
+  "instance.settings.tabs.general.auto-update-modpack.description": {
+    "message": "Automatically update this modpack to the latest version. Updates are checked before launching and periodically in the background."
+  },
   "instance.settings.tabs.general.delete": {
     "message": "Delete instance"
   },
diff --git a/apps/app/build.rs b/apps/app/build.rs
index 1f78fcce47..58f683bdff 100644
--- a/apps/app/build.rs
+++ b/apps/app/build.rs
@@ -196,6 +196,7 @@ fn main() {
                         "profile_edit_icon",
                         "profile_export_mrpack",
                         "profile_get_pack_export_candidates",
+                        "profile_auto_update_all_modpacks",
                     ])
                     .default_permission(
                         DefaultPermissionRule::AllowAllCommands,
diff --git a/apps/app/src/api/profile.rs b/apps/app/src/api/profile.rs
index ab41af5887..cf8ab54e0e 100644
--- a/apps/app/src/api/profile.rs
+++ b/apps/app/src/api/profile.rs
@@ -43,6 +43,7 @@ pub fn init<R: tauri::Runtime>() -> tauri::plugin::TauriPlugin<R> {
             profile_edit_icon,
             profile_export_mrpack,
             profile_get_pack_export_candidates,
+            profile_auto_update_all_modpacks,
         ])
         .build()
 }
@@ -432,6 +433,20 @@ pub struct EditProfile {
     )]
     pub game_resolution: Option<Option<WindowSize>>,
     pub hooks: Option<Hooks>,
+
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "serde_with::rust::double_option"
+    )]
+    pub auto_update_modpack: Option<Option<bool>>,
+}
+
+// Auto-update all modpacks with auto_update_modpack enabled
+// invoke('plugin:profile|profile_auto_update_all_modpacks')
+#[tauri::command]
+pub async fn profile_auto_update_all_modpacks() -> Result<()> {
+    Ok(profile::auto_update_all_modpacks().await?)
 }
 
 // Edits a profile
@@ -480,6 +495,9 @@ pub async fn profile_edit(path: &str, edit_profile: EditProfile) -> Result<()> {
         if let Some(hooks) = edit_profile.hooks.clone() {
             prof.hooks = hooks;
         }
+        if let Some(auto_update_modpack) = edit_profile.auto_update_modpack {
+            prof.auto_update_modpack = auto_update_modpack;
+        }
 
         prof.modified = chrono::Utc::now();
 
diff --git a/apps/app/src/main.rs b/apps/app/src/main.rs
index 33d2da8796..8674e87da6 100644
--- a/apps/app/src/main.rs
+++ b/apps/app/src/main.rs
@@ -226,6 +226,19 @@ fn main() {
                 tracing::warn!("Failed to set window shadow: {e}");
             }
 
+            // Background task: auto-update modpacks every 60 minutes
+            tauri::async_runtime::spawn(async move {
+                // Wait for state to initialize before first check
+                tokio::time::sleep(std::time::Duration::from_secs(30)).await;
+                loop {
+                    tracing::debug!("Running background modpack auto-update check");
+                    if let Err(e) = theseus::profile::auto_update_all_modpacks().await {
+                        tracing::warn!("Background modpack auto-update failed: {e}");
+                    }
+                    tokio::time::sleep(std::time::Duration::from_secs(3600)).await;
+                }
+            });
+
             Ok(())
         });
 
diff --git a/apps/frontend/AGENTS.md b/apps/frontend/AGENTS.md
index 681311eb9c..e69de29bb2 120000
--- a/apps/frontend/AGENTS.md
+++ b/apps/frontend/AGENTS.md
@@ -1 +0,0 @@
-CLAUDE.md
\ No newline at end of file
diff --git a/packages/api-client/AGENTS.md b/packages/api-client/AGENTS.md
index 681311eb9c..ceb2b988dc 120000
--- a/packages/api-client/AGENTS.md
+++ b/packages/api-client/AGENTS.md
@@ -1 +1 @@
-CLAUDE.md
\ No newline at end of file
+CLAUDE.md
diff --git a/packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json b/packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json
deleted file mode 100644
index acc106f94d..0000000000
--- a/packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "db_name": "SQLite",
-  "query": "\n            INSERT INTO profiles (\n                path, install_stage, name, icon_path,\n                game_version, mod_loader, mod_loader_version,\n                groups,\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path, override_extra_launch_args, override_custom_env_vars,\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                protocol_version, launcher_feature_version\n            )\n            VALUES (\n                $1, $2, $3, $4,\n                $5, $6, $7,\n                jsonb($8),\n                $9, $10, $11, $12,\n                $13, $14, $15,\n                $16, $17,\n                $18, jsonb($19), jsonb($20),\n                $21, $22, $23, $24,\n                $25, $26, $27,\n                $28, $29\n            )\n            ON CONFLICT (path) DO UPDATE SET\n                install_stage = $2,\n                name = $3,\n                icon_path = $4,\n\n                game_version = $5,\n                mod_loader = $6,\n                mod_loader_version = $7,\n\n                groups = jsonb($8),\n\n                linked_project_id = $9,\n                linked_version_id = $10,\n                locked = $11,\n                preferred_update_channel = $12,\n\n                created = $13,\n                modified = $14,\n                last_played = $15,\n\n                submitted_time_played = $16,\n                recent_time_played = $17,\n\n                override_java_path = $18,\n                override_extra_launch_args = jsonb($19),\n                override_custom_env_vars = jsonb($20),\n                override_mc_memory_max = $21,\n                override_mc_force_fullscreen = $22,\n                override_mc_game_resolution_x = $23,\n                override_mc_game_resolution_y = $24,\n\n                override_hook_pre_launch = $25,\n                override_hook_wrapper = $26,\n                override_hook_post_exit = $27,\n\n                protocol_version = $28,\n                launcher_feature_version = $29\n            ",
-  "describe": {
-    "columns": [],
-    "parameters": {
-      "Right": 29
-    },
-    "nullable": []
-  },
-  "hash": "22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42"
-}
diff --git a/packages/app-lib/.sqlx/query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json b/packages/app-lib/.sqlx/query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json
similarity index 93%
rename from packages/app-lib/.sqlx/query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json
rename to packages/app-lib/.sqlx/query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json
index 6f16a301a4..47a2543c4f 100644
--- a/packages/app-lib/.sqlx/query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json
+++ b/packages/app-lib/.sqlx/query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json
@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit\n            FROM profiles\n            WHERE 1=$1",
+  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                auto_update_modpack\n            FROM profiles\n            WHERE 1=$1",
   "describe": {
     "columns": [
       {
@@ -147,6 +147,11 @@
         "name": "override_hook_post_exit",
         "ordinal": 28,
         "type_info": "Text"
+      },
+      {
+        "name": "auto_update_modpack",
+        "ordinal": 29,
+        "type_info": "Integer"
       }
     ],
     "parameters": {
@@ -181,8 +186,9 @@
       true,
       true,
       true,
+      true,
       true
     ]
   },
-  "hash": "be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5"
+  "hash": "6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444"
 }
diff --git a/packages/app-lib/.sqlx/query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json b/packages/app-lib/.sqlx/query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json
similarity index 93%
rename from packages/app-lib/.sqlx/query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json
rename to packages/app-lib/.sqlx/query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json
index 775055ea41..2e1bf890b2 100644
--- a/packages/app-lib/.sqlx/query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json
+++ b/packages/app-lib/.sqlx/query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json
@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit\n            FROM profiles\n            WHERE path IN (SELECT value FROM json_each($1))",
+  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                auto_update_modpack\n            FROM profiles\n            WHERE path IN (SELECT value FROM json_each($1))",
   "describe": {
     "columns": [
       {
@@ -147,6 +147,11 @@
         "name": "override_hook_post_exit",
         "ordinal": 28,
         "type_info": "Text"
+      },
+      {
+        "name": "auto_update_modpack",
+        "ordinal": 29,
+        "type_info": "Integer"
       }
     ],
     "parameters": {
@@ -181,8 +186,9 @@
       true,
       true,
       true,
+      true,
       true
     ]
   },
-  "hash": "de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97"
+  "hash": "df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c"
 }
diff --git a/packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json b/packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json
new file mode 100644
index 0000000000..30621991bc
--- /dev/null
+++ b/packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json
@@ -0,0 +1,12 @@
+{
+  "db_name": "SQLite",
+  "query": "\n            INSERT INTO profiles (\n                path, install_stage, name, icon_path,\n                game_version, mod_loader, mod_loader_version,\n                groups,\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path, override_extra_launch_args, override_custom_env_vars,\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                protocol_version, launcher_feature_version,\n                auto_update_modpack\n            )\n            VALUES (\n                $1, $2, $3, $4,\n                $5, $6, $7,\n                jsonb($8),\n                $9, $10, $11, $12,\n                $13, $14, $15,\n                $16, $17,\n                $18, jsonb($19), jsonb($20),\n                $21, $22, $23, $24,\n                $25, $26, $27,\n                $28, $29,\n                $30\n            )\n            ON CONFLICT (path) DO UPDATE SET\n                install_stage = $2,\n                name = $3,\n                icon_path = $4,\n\n                game_version = $5,\n                mod_loader = $6,\n                mod_loader_version = $7,\n\n                groups = jsonb($8),\n\n                linked_project_id = $9,\n                linked_version_id = $10,\n                locked = $11,\n                preferred_update_channel = $12,\n\n                created = $13,\n                modified = $14,\n                last_played = $15,\n\n                submitted_time_played = $16,\n                recent_time_played = $17,\n\n                override_java_path = $18,\n                override_extra_launch_args = jsonb($19),\n                override_custom_env_vars = jsonb($20),\n                override_mc_memory_max = $21,\n                override_mc_force_fullscreen = $22,\n                override_mc_game_resolution_x = $23,\n                override_mc_game_resolution_y = $24,\n\n                override_hook_pre_launch = $25,\n                override_hook_wrapper = $26,\n                override_hook_post_exit = $27,\n\n                protocol_version = $28,\n                launcher_feature_version = $29,\n                auto_update_modpack = $30\n            ",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Right": 30
+    },
+    "nullable": []
+  },
+  "hash": "f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597"
+}
diff --git a/packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql b/packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql
new file mode 100644
index 0000000000..a6835f5056
--- /dev/null
+++ b/packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql
@@ -0,0 +1 @@
+ALTER TABLE profiles ADD COLUMN auto_update_modpack INTEGER NULL;
diff --git a/packages/app-lib/src/api/profile/create.rs b/packages/app-lib/src/api/profile/create.rs
index c1a1491c1b..21d8f31548 100644
--- a/packages/app-lib/src/api/profile/create.rs
+++ b/packages/app-lib/src/api/profile/create.rs
@@ -102,6 +102,7 @@ pub async fn profile_create(
             wrapper: None,
             post_exit: None,
         },
+        auto_update_modpack: None,
     };
 
     let result = async {
diff --git a/packages/app-lib/src/api/profile/mod.rs b/packages/app-lib/src/api/profile/mod.rs
index a7f2f113ac..b58ba3d537 100644
--- a/packages/app-lib/src/api/profile/mod.rs
+++ b/packages/app-lib/src/api/profile/mod.rs
@@ -819,6 +819,37 @@ async fn run_credentials(
         ))
     })?;
 
+    // Auto-update modpack if enabled and an update is available
+    if profile.auto_update_modpack == Some(true)
+        && profile.linked_data.is_some()
+        && let Ok(Some(info)) = crate::state::get_linked_modpack_info(
+            &profile,
+            None,
+            &state.pool,
+            &state.api_semaphore,
+        )
+        .await
+        && info.has_update
+        && let Some(update_version_id) = &info.update_version_id
+    {
+        tracing::info!(
+            "Auto-updating modpack '{}' to version {}",
+            profile.name,
+            update_version_id,
+        );
+        if let Err(e) = update::update_managed_modrinth_version(
+            &profile.path,
+            update_version_id,
+        )
+        .await
+        {
+            tracing::warn!(
+                "Auto-update of modpack '{}' failed: {e}",
+                profile.name,
+            );
+        }
+    }
+
     let pre_launch_hooks = profile
         .hooks
         .pre_launch
@@ -1178,6 +1209,117 @@ pub async fn add_all_recursive_folder_paths(
     Ok(())
 }
 
+/// Check for a modpack update for a single profile and apply it if auto-update is enabled.
+/// Returns `true` if an update was applied.
+#[tracing::instrument]
+pub async fn auto_update_modpack_if_needed(path: &str) -> crate::Result<bool> {
+    let state = State::get().await?;
+
+    let Some(profile) = get(path).await? else {
+        return Ok(false);
+    };
+
+    if profile.auto_update_modpack != Some(true)
+        || profile.linked_data.is_none()
+    {
+        return Ok(false);
+    }
+
+    let Some(info) = crate::state::get_linked_modpack_info(
+        &profile,
+        None,
+        &state.pool,
+        &state.api_semaphore,
+    )
+    .await?
+    else {
+        return Ok(false);
+    };
+
+    if info.has_update
+        && let Some(update_version_id) = &info.update_version_id
+    {
+        tracing::info!(
+            "Auto-updating modpack '{}' to version {}",
+            profile.name,
+            update_version_id,
+        );
+        update::update_managed_modrinth_version(
+            &profile.path,
+            update_version_id,
+        )
+        .await?;
+        return Ok(true);
+    }
+
+    Ok(false)
+}
+
+/// Check all profiles for modpack updates and apply them automatically
+/// where `auto_update_modpack` is enabled.
+#[tracing::instrument]
+pub async fn auto_update_all_modpacks() -> crate::Result<()> {
+    let state = State::get().await?;
+    let profiles = Profile::get_all(&state.pool).await?;
+
+    for profile in &profiles {
+        if profile.auto_update_modpack != Some(true)
+            || profile.linked_data.is_none()
+        {
+            continue;
+        }
+
+        // Skip if the profile is currently running
+        let is_running = state
+            .process_manager
+            .get_all()
+            .iter()
+            .any(|p| p.profile_path == profile.path);
+
+        if is_running {
+            tracing::debug!(
+                "Skipping auto-update for '{}' — profile is running",
+                profile.name,
+            );
+            continue;
+        }
+
+        let Ok(Some(info)) = crate::state::get_linked_modpack_info(
+            profile,
+            None,
+            &state.pool,
+            &state.api_semaphore,
+        )
+        .await
+        else {
+            continue;
+        };
+
+        if info.has_update
+            && let Some(update_version_id) = &info.update_version_id
+        {
+            tracing::info!(
+                "Background auto-updating modpack '{}' to version {}",
+                profile.name,
+                update_version_id,
+            );
+            if let Err(e) = update::update_managed_modrinth_version(
+                &profile.path,
+                update_version_id,
+            )
+            .await
+            {
+                tracing::warn!(
+                    "Background auto-update of modpack '{}' failed: {e}",
+                    profile.name,
+                );
+            }
+        }
+    }
+
+    Ok(())
+}
+
 pub fn sanitize_profile_name(input: &str) -> String {
     input.replace(
         ['/', '\\', '?', '*', ':', '\'', '\"', '|', '<', '>', '!'],
diff --git a/packages/app-lib/src/state/legacy_converter.rs b/packages/app-lib/src/state/legacy_converter.rs
index 9404c6ae0f..e765cf267c 100644
--- a/packages/app-lib/src/state/legacy_converter.rs
+++ b/packages/app-lib/src/state/legacy_converter.rs
@@ -376,6 +376,7 @@ where
                             .and_then(|x| x.wrapper.clone()),
                         post_exit: profile.hooks.and_then(|x| x.post_exit),
                     },
+                    auto_update_modpack: None,
                 }
                 .upsert(exec)
                 .await?;
diff --git a/packages/app-lib/src/state/profiles.rs b/packages/app-lib/src/state/profiles.rs
index c30412af22..c2e5bd11a4 100644
--- a/packages/app-lib/src/state/profiles.rs
+++ b/packages/app-lib/src/state/profiles.rs
@@ -57,6 +57,7 @@ pub struct Profile {
     pub force_fullscreen: Option<bool>,
     pub game_resolution: Option<WindowSize>,
     pub hooks: Hooks,
+    pub auto_update_modpack: Option<bool>,
 }
 
 #[derive(Serialize, Deserialize, Clone, Copy, Debug, Eq, PartialEq)]
@@ -315,6 +316,7 @@ struct ProfileQueryResult {
     override_hook_post_exit: Option<String>,
     protocol_version: Option<i64>,
     launcher_feature_version: String,
+    auto_update_modpack: Option<i64>,
 }
 
 impl TryFrom<ProfileQueryResult> for Profile {
@@ -387,6 +389,7 @@ impl TryFrom<ProfileQueryResult> for Profile {
                 wrapper: x.override_hook_wrapper,
                 post_exit: x.override_hook_post_exit,
             },
+            auto_update_modpack: x.auto_update_modpack.map(|x| x == 1),
         })
     }
 }
@@ -406,7 +409,8 @@ macro_rules! select_profiles_with_predicate {
                 override_java_path,
                 json(override_extra_launch_args) as "override_extra_launch_args!: serde_json::Value", json(override_custom_env_vars) as "override_custom_env_vars!: serde_json::Value",
                 override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,
-                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit
+                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,
+                auto_update_modpack
             FROM profiles
             "#
                 + $predicate,
@@ -527,7 +531,8 @@ impl Profile {
                 override_java_path, override_extra_launch_args, override_custom_env_vars,
                 override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,
                 override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,
-                protocol_version, launcher_feature_version
+                protocol_version, launcher_feature_version,
+                auto_update_modpack
             )
             VALUES (
                 $1, $2, $3, $4,
@@ -539,7 +544,8 @@ impl Profile {
                 $18, jsonb($19), jsonb($20),
                 $21, $22, $23, $24,
                 $25, $26, $27,
-                $28, $29
+                $28, $29,
+                $30
             )
             ON CONFLICT (path) DO UPDATE SET
                 install_stage = $2,
@@ -577,7 +583,8 @@ impl Profile {
                 override_hook_post_exit = $27,
 
                 protocol_version = $28,
-                launcher_feature_version = $29
+                launcher_feature_version = $29,
+                auto_update_modpack = $30
             ",
             self.path,
             install_stage,
@@ -607,7 +614,8 @@ impl Profile {
             self.hooks.wrapper,
             self.hooks.post_exit,
             self.protocol_version,
-            launcher_feature_version
+            launcher_feature_version,
+            self.auto_update_modpack
         )
             .execute(exec)
             .await?;
diff --git a/packages/assets/generated-icons.ts b/packages/assets/generated-icons.ts
index 17c0b991ee..b7f340b38f 100644
--- a/packages/assets/generated-icons.ts
+++ b/packages/assets/generated-icons.ts
@@ -851,140 +851,141 @@ export const XCircleIcon = _XCircleIcon
 export const ZoomInIcon = _ZoomInIcon
 export const ZoomOutIcon = _ZoomOutIcon
 
+
 export const categoryIconMap: Record<string, IconComponent> = {
-	adventure: TagCategoryAdventureIcon,
-	atmosphere: TagCategoryAtmosphereIcon,
-	audio: TagCategoryAudioIcon,
-	backpack: TagCategoryBackpackIcon,
-	badge: TagCategoryBadgeIcon,
+	'adventure': TagCategoryAdventureIcon,
+	'atmosphere': TagCategoryAtmosphereIcon,
+	'audio': TagCategoryAudioIcon,
+	'backpack': TagCategoryBackpackIcon,
+	'badge': TagCategoryBadgeIcon,
 	'badge-check': TagCategoryBadgeCheckIcon,
 	'bed-double': TagCategoryBedDoubleIcon,
-	blocks: TagCategoryBlocksIcon,
-	bloom: TagCategoryBloomIcon,
+	'blocks': TagCategoryBlocksIcon,
+	'bloom': TagCategoryBloomIcon,
 	'building-2': TagCategoryBuilding2Icon,
-	camera: TagCategoryCameraIcon,
-	cartoon: TagCategoryCartoonIcon,
-	castle: TagCategoryCastleIcon,
-	challenging: TagCategoryChallengingIcon,
-	clapperboard: TagCategoryClapperboardIcon,
-	cloud: TagCategoryCloudIcon,
+	'camera': TagCategoryCameraIcon,
+	'cartoon': TagCategoryCartoonIcon,
+	'castle': TagCategoryCastleIcon,
+	'challenging': TagCategoryChallengingIcon,
+	'clapperboard': TagCategoryClapperboardIcon,
+	'cloud': TagCategoryCloudIcon,
 	'colored-lighting': TagCategoryColoredLightingIcon,
-	combat: TagCategoryCombatIcon,
-	compass: TagCategoryCompassIcon,
+	'combat': TagCategoryCombatIcon,
+	'compass': TagCategoryCompassIcon,
 	'core-shaders': TagCategoryCoreShadersIcon,
-	crown: TagCategoryCrownIcon,
-	cursed: TagCategoryCursedIcon,
-	decoration: TagCategoryDecorationIcon,
-	dices: TagCategoryDicesIcon,
-	economy: TagCategoryEconomyIcon,
-	entities: TagCategoryEntitiesIcon,
-	environment: TagCategoryEnvironmentIcon,
-	equipment: TagCategoryEquipmentIcon,
-	fantasy: TagCategoryFantasyIcon,
-	film: TagCategoryFilmIcon,
-	flag: TagCategoryFlagIcon,
-	foliage: TagCategoryFoliageIcon,
-	fonts: TagCategoryFontsIcon,
-	food: TagCategoryFoodIcon,
-	footprints: TagCategoryFootprintsIcon,
+	'crown': TagCategoryCrownIcon,
+	'cursed': TagCategoryCursedIcon,
+	'decoration': TagCategoryDecorationIcon,
+	'dices': TagCategoryDicesIcon,
+	'economy': TagCategoryEconomyIcon,
+	'entities': TagCategoryEntitiesIcon,
+	'environment': TagCategoryEnvironmentIcon,
+	'equipment': TagCategoryEquipmentIcon,
+	'fantasy': TagCategoryFantasyIcon,
+	'film': TagCategoryFilmIcon,
+	'flag': TagCategoryFlagIcon,
+	'foliage': TagCategoryFoliageIcon,
+	'fonts': TagCategoryFontsIcon,
+	'food': TagCategoryFoodIcon,
+	'footprints': TagCategoryFootprintsIcon,
 	'game-mechanics': TagCategoryGameMechanicsIcon,
 	'gamepad-2': TagCategoryGamepad2Icon,
-	gauge: TagCategoryGaugeIcon,
-	globe: TagCategoryGlobeIcon,
+	'gauge': TagCategoryGaugeIcon,
+	'globe': TagCategoryGlobeIcon,
 	'grid-3x3': TagCategoryGrid3x3Icon,
-	gui: TagCategoryGuiIcon,
-	handshake: TagCategoryHandshakeIcon,
+	'gui': TagCategoryGuiIcon,
+	'handshake': TagCategoryHandshakeIcon,
 	'heart-crack': TagCategoryHeartCrackIcon,
 	'heart-pulse': TagCategoryHeartPulseIcon,
-	high: TagCategoryHighIcon,
-	house: TagCategoryHouseIcon,
-	items: TagCategoryItemsIcon,
+	'high': TagCategoryHighIcon,
+	'house': TagCategoryHouseIcon,
+	'items': TagCategoryItemsIcon,
 	'kitchen-sink': TagCategoryKitchenSinkIcon,
-	library: TagCategoryLibraryIcon,
-	lightweight: TagCategoryLightweightIcon,
-	locale: TagCategoryLocaleIcon,
-	lock: TagCategoryLockIcon,
-	low: TagCategoryLowIcon,
-	magic: TagCategoryMagicIcon,
-	management: TagCategoryManagementIcon,
+	'library': TagCategoryLibraryIcon,
+	'lightweight': TagCategoryLightweightIcon,
+	'locale': TagCategoryLocaleIcon,
+	'lock': TagCategoryLockIcon,
+	'low': TagCategoryLowIcon,
+	'magic': TagCategoryMagicIcon,
+	'management': TagCategoryManagementIcon,
 	'map-pinned': TagCategoryMapPinnedIcon,
-	medium: TagCategoryMediumIcon,
-	minigame: TagCategoryMinigameIcon,
-	mobs: TagCategoryMobsIcon,
-	modded: TagCategoryModdedIcon,
-	models: TagCategoryModelsIcon,
-	multiplayer: TagCategoryMultiplayerIcon,
-	network: TagCategoryNetworkIcon,
-	optimization: TagCategoryOptimizationIcon,
-	palette: TagCategoryPaletteIcon,
+	'medium': TagCategoryMediumIcon,
+	'minigame': TagCategoryMinigameIcon,
+	'mobs': TagCategoryMobsIcon,
+	'modded': TagCategoryModdedIcon,
+	'models': TagCategoryModelsIcon,
+	'multiplayer': TagCategoryMultiplayerIcon,
+	'network': TagCategoryNetworkIcon,
+	'optimization': TagCategoryOptimizationIcon,
+	'palette': TagCategoryPaletteIcon,
 	'path-tracing': TagCategoryPathTracingIcon,
 	'paw-print': TagCategoryPawPrintIcon,
-	pbr: TagCategoryPbrIcon,
-	pickaxe: TagCategoryPickaxeIcon,
-	potato: TagCategoryPotatoIcon,
-	quests: TagCategoryQuestsIcon,
-	realistic: TagCategoryRealisticIcon,
-	reflections: TagCategoryReflectionsIcon,
+	'pbr': TagCategoryPbrIcon,
+	'pickaxe': TagCategoryPickaxeIcon,
+	'potato': TagCategoryPotatoIcon,
+	'quests': TagCategoryQuestsIcon,
+	'realistic': TagCategoryRealisticIcon,
+	'reflections': TagCategoryReflectionsIcon,
 	'refresh-ccw': TagCategoryRefreshCcwIcon,
-	screenshot: TagCategoryScreenshotIcon,
+	'screenshot': TagCategoryScreenshotIcon,
 	'scroll-text': TagCategoryScrollTextIcon,
 	'semi-realistic': TagCategorySemiRealisticIcon,
-	shadows: TagCategoryShadowsIcon,
-	shield: TagCategoryShieldIcon,
-	simplistic: TagCategorySimplisticIcon,
-	skull: TagCategorySkullIcon,
-	social: TagCategorySocialIcon,
-	square: TagCategorySquareIcon,
-	storage: TagCategoryStorageIcon,
-	sword: TagCategorySwordIcon,
-	swords: TagCategorySwordsIcon,
-	target: TagCategoryTargetIcon,
-	technology: TagCategoryTechnologyIcon,
-	terminal: TagCategoryTerminalIcon,
-	theater: TagCategoryTheaterIcon,
-	themed: TagCategoryThemedIcon,
-	transportation: TagCategoryTransportationIcon,
+	'shadows': TagCategoryShadowsIcon,
+	'shield': TagCategoryShieldIcon,
+	'simplistic': TagCategorySimplisticIcon,
+	'skull': TagCategorySkullIcon,
+	'social': TagCategorySocialIcon,
+	'square': TagCategorySquareIcon,
+	'storage': TagCategoryStorageIcon,
+	'sword': TagCategorySwordIcon,
+	'swords': TagCategorySwordsIcon,
+	'target': TagCategoryTargetIcon,
+	'technology': TagCategoryTechnologyIcon,
+	'terminal': TagCategoryTerminalIcon,
+	'theater': TagCategoryTheaterIcon,
+	'themed': TagCategoryThemedIcon,
+	'transportation': TagCategoryTransportationIcon,
 	'tree-pine': TagCategoryTreePineIcon,
-	trophy: TagCategoryTrophyIcon,
-	tweaks: TagCategoryTweaksIcon,
-	users: TagCategoryUsersIcon,
-	utility: TagCategoryUtilityIcon,
+	'trophy': TagCategoryTrophyIcon,
+	'tweaks': TagCategoryTweaksIcon,
+	'users': TagCategoryUsersIcon,
+	'utility': TagCategoryUtilityIcon,
 	'vanilla-like': TagCategoryVanillaLikeIcon,
 	'wand-sparkles': TagCategoryWandSparklesIcon,
 	'wifi-off': TagCategoryWifiOffIcon,
-	worldgen: TagCategoryWorldgenIcon,
-	zap: TagCategoryZapIcon,
+	'worldgen': TagCategoryWorldgenIcon,
+	'zap': TagCategoryZapIcon,
 }
 
 export const loaderIconMap: Record<string, IconComponent> = {
-	babric: TagLoaderBabricIcon,
+	'babric': TagLoaderBabricIcon,
 	'bta-babric': TagLoaderBtaBabricIcon,
-	bukkit: TagLoaderBukkitIcon,
-	bungeecord: TagLoaderBungeecordIcon,
-	canvas: TagLoaderCanvasIcon,
-	datapack: TagLoaderDatapackIcon,
-	fabric: TagLoaderFabricIcon,
-	folia: TagLoaderFoliaIcon,
-	forge: TagLoaderForgeIcon,
-	geyser: TagLoaderGeyserIcon,
-	iris: TagLoaderIrisIcon,
+	'bukkit': TagLoaderBukkitIcon,
+	'bungeecord': TagLoaderBungeecordIcon,
+	'canvas': TagLoaderCanvasIcon,
+	'datapack': TagLoaderDatapackIcon,
+	'fabric': TagLoaderFabricIcon,
+	'folia': TagLoaderFoliaIcon,
+	'forge': TagLoaderForgeIcon,
+	'geyser': TagLoaderGeyserIcon,
+	'iris': TagLoaderIrisIcon,
 	'java-agent': TagLoaderJavaAgentIcon,
 	'legacy-fabric': TagLoaderLegacyFabricIcon,
-	liteloader: TagLoaderLiteloaderIcon,
-	minecraft: TagLoaderMinecraftIcon,
-	modloader: TagLoaderModloaderIcon,
-	mrpack: TagLoaderMrpackIcon,
-	neoforge: TagLoaderNeoforgeIcon,
-	nilloader: TagLoaderNilloaderIcon,
-	optifine: TagLoaderOptifineIcon,
-	ornithe: TagLoaderOrnitheIcon,
-	paper: TagLoaderPaperIcon,
-	purpur: TagLoaderPurpurIcon,
-	quilt: TagLoaderQuiltIcon,
-	rift: TagLoaderRiftIcon,
-	spigot: TagLoaderSpigotIcon,
-	sponge: TagLoaderSpongeIcon,
-	vanilla: TagLoaderVanillaIcon,
-	velocity: TagLoaderVelocityIcon,
-	waterfall: TagLoaderWaterfallIcon,
+	'liteloader': TagLoaderLiteloaderIcon,
+	'minecraft': TagLoaderMinecraftIcon,
+	'modloader': TagLoaderModloaderIcon,
+	'mrpack': TagLoaderMrpackIcon,
+	'neoforge': TagLoaderNeoforgeIcon,
+	'nilloader': TagLoaderNilloaderIcon,
+	'optifine': TagLoaderOptifineIcon,
+	'ornithe': TagLoaderOrnitheIcon,
+	'paper': TagLoaderPaperIcon,
+	'purpur': TagLoaderPurpurIcon,
+	'quilt': TagLoaderQuiltIcon,
+	'rift': TagLoaderRiftIcon,
+	'spigot': TagLoaderSpigotIcon,
+	'sponge': TagLoaderSpongeIcon,
+	'vanilla': TagLoaderVanillaIcon,
+	'velocity': TagLoaderVelocityIcon,
+	'waterfall': TagLoaderWaterfallIcon,
 }

From 6421c49e87b179ca7a74feea9bb1b7f6ac29740f Mon Sep 17 00:00:00 2001
From: amnesiaof <dolombovskyyalexs@gmail.com>
Date: Thu, 18 Jun 2026 20:09:59 +0300
Subject: [PATCH 2/4] feat(app): auto-update linked modpacks before launch and
 in background

---
 .../ui/instance_settings/GeneralSettings.vue  |  37 +++++
 apps/app-frontend/src/helpers/profile.ts      |   5 +
 apps/app-frontend/src/helpers/types.d.ts      |   1 +
 .../app-frontend/src/locales/en-US/index.json |   6 +
 apps/app/build.rs                             |   1 +
 apps/app/src/api/profile.rs                   |  18 +++
 apps/app/src/main.rs                          |  13 ++
 ...63a1388ef538e4b80680bce4b668b182b4f42.json |  12 --
 ...d0494058373b484ca8ac44a02edb7a4cc444.json} |  10 +-
 ...fa00083022e0a4b0437a3e613c84e76f2d5c.json} |  10 +-
 ...b207c848c1d4cf7c30243b5c2cfd6a6f11597.json |  12 ++
 ...20260618000000_add-auto-update-modpack.sql |   1 +
 packages/app-lib/src/api/profile/create.rs    |   1 +
 packages/app-lib/src/api/profile/mod.rs       | 142 ++++++++++++++++++
 .../app-lib/src/state/legacy_converter.rs     |   1 +
 packages/app-lib/src/state/profiles.rs        |  18 ++-
 16 files changed, 267 insertions(+), 21 deletions(-)
 delete mode 100644 packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json
 rename packages/app-lib/.sqlx/{query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json => query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json} (93%)
 rename packages/app-lib/.sqlx/{query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json => query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json} (93%)
 create mode 100644 packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json
 create mode 100644 packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql

diff --git a/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue b/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue
index e30bead729..85a2df3500 100644
--- a/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue
+++ b/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue
@@ -9,6 +9,7 @@ import {
 	injectNotificationManager,
 	OverflowMenu,
 	StyledInput,
+	Toggle,
 	useVIntl,
 } from '@modrinth/ui'
 import { useQueryClient } from '@tanstack/vue-query'
@@ -44,6 +45,21 @@ const releaseChannelDisabledItems = computed<ReleaseChannel[]>(() =>
 	savingReleaseChannel.value ? [...releaseChannelOptions] : [],
 )
 
+const autoUpdateModpack = ref(instance.value.auto_update_modpack ?? false)
+
+const hasLinkedModpack = computed(() => !!instance.value.linked_data)
+
+watch(autoUpdateModpack, async (value) => {
+	await edit(instance.value.path, { auto_update_modpack: value }).catch(handleError)
+})
+
+watch(
+	() => instance.value.auto_update_modpack,
+	(val) => {
+		autoUpdateModpack.value = val ?? false
+	},
+)
+
 const newCategoryInput = ref('')
 
 const installing = computed(() => instance.value.install_stage !== 'installed')
@@ -263,6 +279,15 @@ const messages = defineMessages({
 		id: 'instance.settings.tabs.general.update-channel.select',
 		defaultMessage: 'Select update channel',
 	},
+	autoUpdateModpack: {
+		id: 'instance.settings.tabs.general.auto-update-modpack',
+		defaultMessage: 'Auto-update modpack',
+	},
+	autoUpdateModpackDescription: {
+		id: 'instance.settings.tabs.general.auto-update-modpack.description',
+		defaultMessage:
+			'Automatically update this modpack to the latest version. Updates are checked before launching and periodically in the background.',
+	},
 	deleteInstance: {
 		id: 'instance.settings.tabs.general.delete',
 		defaultMessage: 'Delete instance',
@@ -409,6 +434,18 @@ const messages = defineMessages({
 			</p>
 		</div>
 
+		<div v-if="hasLinkedModpack" class="flex items-center justify-between gap-4 mt-6">
+			<div>
+				<h2 class="m-0 text-lg font-semibold text-contrast">
+					{{ formatMessage(messages.autoUpdateModpack) }}
+				</h2>
+				<p class="m-0 mt-1 text-sm">
+					{{ formatMessage(messages.autoUpdateModpackDescription) }}
+				</p>
+			</div>
+			<Toggle id="auto-update-modpack" v-model="autoUpdateModpack" />
+		</div>
+
 		<div class="flex flex-col gap-2.5 mt-6">
 			<h2 id="delete-instance-label" class="m-0 text-lg font-semibold text-contrast block">
 				{{ formatMessage(messages.deleteInstance) }}
diff --git a/apps/app-frontend/src/helpers/profile.ts b/apps/app-frontend/src/helpers/profile.ts
index be3b62c6ef..d4ffcd4707 100644
--- a/apps/app-frontend/src/helpers/profile.ts
+++ b/apps/app-frontend/src/helpers/profile.ts
@@ -242,6 +242,11 @@ export async function update_managed_modrinth_version(
 	})
 }
 
+// Auto-update all modpacks with auto_update_modpack enabled
+export async function auto_update_all_modpacks(): Promise<void> {
+	return await invoke('plugin:profile|profile_auto_update_all_modpacks')
+}
+
 // Repair a managed Modrinth profile
 export async function update_repair_modrinth(path: string): Promise<void> {
 	return await invoke('plugin:profile|profile_repair_managed_modrinth', { path })
diff --git a/apps/app-frontend/src/helpers/types.d.ts b/apps/app-frontend/src/helpers/types.d.ts
index 143997702f..f659f2d9cc 100644
--- a/apps/app-frontend/src/helpers/types.d.ts
+++ b/apps/app-frontend/src/helpers/types.d.ts
@@ -31,6 +31,7 @@ export type GameInstance = {
 	force_fullscreen?: boolean
 	game_resolution?: [number, number]
 	hooks: Hooks
+	auto_update_modpack?: boolean
 }
 
 type InstallStage =
diff --git a/apps/app-frontend/src/locales/en-US/index.json b/apps/app-frontend/src/locales/en-US/index.json
index cf98dc3a76..cb3cb7e424 100644
--- a/apps/app-frontend/src/locales/en-US/index.json
+++ b/apps/app-frontend/src/locales/en-US/index.json
@@ -665,6 +665,12 @@
   "instance.settings.tabs.general": {
     "message": "General"
   },
+  "instance.settings.tabs.general.auto-update-modpack": {
+    "message": "Auto-update modpack"
+  },
+  "instance.settings.tabs.general.auto-update-modpack.description": {
+    "message": "Automatically update this modpack to the latest version. Updates are checked before launching and periodically in the background."
+  },
   "instance.settings.tabs.general.delete": {
     "message": "Delete instance"
   },
diff --git a/apps/app/build.rs b/apps/app/build.rs
index 1f78fcce47..58f683bdff 100644
--- a/apps/app/build.rs
+++ b/apps/app/build.rs
@@ -196,6 +196,7 @@ fn main() {
                         "profile_edit_icon",
                         "profile_export_mrpack",
                         "profile_get_pack_export_candidates",
+                        "profile_auto_update_all_modpacks",
                     ])
                     .default_permission(
                         DefaultPermissionRule::AllowAllCommands,
diff --git a/apps/app/src/api/profile.rs b/apps/app/src/api/profile.rs
index ab41af5887..cf8ab54e0e 100644
--- a/apps/app/src/api/profile.rs
+++ b/apps/app/src/api/profile.rs
@@ -43,6 +43,7 @@ pub fn init<R: tauri::Runtime>() -> tauri::plugin::TauriPlugin<R> {
             profile_edit_icon,
             profile_export_mrpack,
             profile_get_pack_export_candidates,
+            profile_auto_update_all_modpacks,
         ])
         .build()
 }
@@ -432,6 +433,20 @@ pub struct EditProfile {
     )]
     pub game_resolution: Option<Option<WindowSize>>,
     pub hooks: Option<Hooks>,
+
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "serde_with::rust::double_option"
+    )]
+    pub auto_update_modpack: Option<Option<bool>>,
+}
+
+// Auto-update all modpacks with auto_update_modpack enabled
+// invoke('plugin:profile|profile_auto_update_all_modpacks')
+#[tauri::command]
+pub async fn profile_auto_update_all_modpacks() -> Result<()> {
+    Ok(profile::auto_update_all_modpacks().await?)
 }
 
 // Edits a profile
@@ -480,6 +495,9 @@ pub async fn profile_edit(path: &str, edit_profile: EditProfile) -> Result<()> {
         if let Some(hooks) = edit_profile.hooks.clone() {
             prof.hooks = hooks;
         }
+        if let Some(auto_update_modpack) = edit_profile.auto_update_modpack {
+            prof.auto_update_modpack = auto_update_modpack;
+        }
 
         prof.modified = chrono::Utc::now();
 
diff --git a/apps/app/src/main.rs b/apps/app/src/main.rs
index 33d2da8796..8674e87da6 100644
--- a/apps/app/src/main.rs
+++ b/apps/app/src/main.rs
@@ -226,6 +226,19 @@ fn main() {
                 tracing::warn!("Failed to set window shadow: {e}");
             }
 
+            // Background task: auto-update modpacks every 60 minutes
+            tauri::async_runtime::spawn(async move {
+                // Wait for state to initialize before first check
+                tokio::time::sleep(std::time::Duration::from_secs(30)).await;
+                loop {
+                    tracing::debug!("Running background modpack auto-update check");
+                    if let Err(e) = theseus::profile::auto_update_all_modpacks().await {
+                        tracing::warn!("Background modpack auto-update failed: {e}");
+                    }
+                    tokio::time::sleep(std::time::Duration::from_secs(3600)).await;
+                }
+            });
+
             Ok(())
         });
 
diff --git a/packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json b/packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json
deleted file mode 100644
index acc106f94d..0000000000
--- a/packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "db_name": "SQLite",
-  "query": "\n            INSERT INTO profiles (\n                path, install_stage, name, icon_path,\n                game_version, mod_loader, mod_loader_version,\n                groups,\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path, override_extra_launch_args, override_custom_env_vars,\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                protocol_version, launcher_feature_version\n            )\n            VALUES (\n                $1, $2, $3, $4,\n                $5, $6, $7,\n                jsonb($8),\n                $9, $10, $11, $12,\n                $13, $14, $15,\n                $16, $17,\n                $18, jsonb($19), jsonb($20),\n                $21, $22, $23, $24,\n                $25, $26, $27,\n                $28, $29\n            )\n            ON CONFLICT (path) DO UPDATE SET\n                install_stage = $2,\n                name = $3,\n                icon_path = $4,\n\n                game_version = $5,\n                mod_loader = $6,\n                mod_loader_version = $7,\n\n                groups = jsonb($8),\n\n                linked_project_id = $9,\n                linked_version_id = $10,\n                locked = $11,\n                preferred_update_channel = $12,\n\n                created = $13,\n                modified = $14,\n                last_played = $15,\n\n                submitted_time_played = $16,\n                recent_time_played = $17,\n\n                override_java_path = $18,\n                override_extra_launch_args = jsonb($19),\n                override_custom_env_vars = jsonb($20),\n                override_mc_memory_max = $21,\n                override_mc_force_fullscreen = $22,\n                override_mc_game_resolution_x = $23,\n                override_mc_game_resolution_y = $24,\n\n                override_hook_pre_launch = $25,\n                override_hook_wrapper = $26,\n                override_hook_post_exit = $27,\n\n                protocol_version = $28,\n                launcher_feature_version = $29\n            ",
-  "describe": {
-    "columns": [],
-    "parameters": {
-      "Right": 29
-    },
-    "nullable": []
-  },
-  "hash": "22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42"
-}
diff --git a/packages/app-lib/.sqlx/query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json b/packages/app-lib/.sqlx/query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json
similarity index 93%
rename from packages/app-lib/.sqlx/query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json
rename to packages/app-lib/.sqlx/query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json
index 6f16a301a4..47a2543c4f 100644
--- a/packages/app-lib/.sqlx/query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json
+++ b/packages/app-lib/.sqlx/query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json
@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit\n            FROM profiles\n            WHERE 1=$1",
+  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                auto_update_modpack\n            FROM profiles\n            WHERE 1=$1",
   "describe": {
     "columns": [
       {
@@ -147,6 +147,11 @@
         "name": "override_hook_post_exit",
         "ordinal": 28,
         "type_info": "Text"
+      },
+      {
+        "name": "auto_update_modpack",
+        "ordinal": 29,
+        "type_info": "Integer"
       }
     ],
     "parameters": {
@@ -181,8 +186,9 @@
       true,
       true,
       true,
+      true,
       true
     ]
   },
-  "hash": "be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5"
+  "hash": "6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444"
 }
diff --git a/packages/app-lib/.sqlx/query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json b/packages/app-lib/.sqlx/query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json
similarity index 93%
rename from packages/app-lib/.sqlx/query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json
rename to packages/app-lib/.sqlx/query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json
index 775055ea41..2e1bf890b2 100644
--- a/packages/app-lib/.sqlx/query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json
+++ b/packages/app-lib/.sqlx/query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json
@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit\n            FROM profiles\n            WHERE path IN (SELECT value FROM json_each($1))",
+  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                auto_update_modpack\n            FROM profiles\n            WHERE path IN (SELECT value FROM json_each($1))",
   "describe": {
     "columns": [
       {
@@ -147,6 +147,11 @@
         "name": "override_hook_post_exit",
         "ordinal": 28,
         "type_info": "Text"
+      },
+      {
+        "name": "auto_update_modpack",
+        "ordinal": 29,
+        "type_info": "Integer"
       }
     ],
     "parameters": {
@@ -181,8 +186,9 @@
       true,
       true,
       true,
+      true,
       true
     ]
   },
-  "hash": "de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97"
+  "hash": "df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c"
 }
diff --git a/packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json b/packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json
new file mode 100644
index 0000000000..30621991bc
--- /dev/null
+++ b/packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json
@@ -0,0 +1,12 @@
+{
+  "db_name": "SQLite",
+  "query": "\n            INSERT INTO profiles (\n                path, install_stage, name, icon_path,\n                game_version, mod_loader, mod_loader_version,\n                groups,\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path, override_extra_launch_args, override_custom_env_vars,\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                protocol_version, launcher_feature_version,\n                auto_update_modpack\n            )\n            VALUES (\n                $1, $2, $3, $4,\n                $5, $6, $7,\n                jsonb($8),\n                $9, $10, $11, $12,\n                $13, $14, $15,\n                $16, $17,\n                $18, jsonb($19), jsonb($20),\n                $21, $22, $23, $24,\n                $25, $26, $27,\n                $28, $29,\n                $30\n            )\n            ON CONFLICT (path) DO UPDATE SET\n                install_stage = $2,\n                name = $3,\n                icon_path = $4,\n\n                game_version = $5,\n                mod_loader = $6,\n                mod_loader_version = $7,\n\n                groups = jsonb($8),\n\n                linked_project_id = $9,\n                linked_version_id = $10,\n                locked = $11,\n                preferred_update_channel = $12,\n\n                created = $13,\n                modified = $14,\n                last_played = $15,\n\n                submitted_time_played = $16,\n                recent_time_played = $17,\n\n                override_java_path = $18,\n                override_extra_launch_args = jsonb($19),\n                override_custom_env_vars = jsonb($20),\n                override_mc_memory_max = $21,\n                override_mc_force_fullscreen = $22,\n                override_mc_game_resolution_x = $23,\n                override_mc_game_resolution_y = $24,\n\n                override_hook_pre_launch = $25,\n                override_hook_wrapper = $26,\n                override_hook_post_exit = $27,\n\n                protocol_version = $28,\n                launcher_feature_version = $29,\n                auto_update_modpack = $30\n            ",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Right": 30
+    },
+    "nullable": []
+  },
+  "hash": "f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597"
+}
diff --git a/packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql b/packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql
new file mode 100644
index 0000000000..a6835f5056
--- /dev/null
+++ b/packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql
@@ -0,0 +1 @@
+ALTER TABLE profiles ADD COLUMN auto_update_modpack INTEGER NULL;
diff --git a/packages/app-lib/src/api/profile/create.rs b/packages/app-lib/src/api/profile/create.rs
index c1a1491c1b..21d8f31548 100644
--- a/packages/app-lib/src/api/profile/create.rs
+++ b/packages/app-lib/src/api/profile/create.rs
@@ -102,6 +102,7 @@ pub async fn profile_create(
             wrapper: None,
             post_exit: None,
         },
+        auto_update_modpack: None,
     };
 
     let result = async {
diff --git a/packages/app-lib/src/api/profile/mod.rs b/packages/app-lib/src/api/profile/mod.rs
index a7f2f113ac..b58ba3d537 100644
--- a/packages/app-lib/src/api/profile/mod.rs
+++ b/packages/app-lib/src/api/profile/mod.rs
@@ -819,6 +819,37 @@ async fn run_credentials(
         ))
     })?;
 
+    // Auto-update modpack if enabled and an update is available
+    if profile.auto_update_modpack == Some(true)
+        && profile.linked_data.is_some()
+        && let Ok(Some(info)) = crate::state::get_linked_modpack_info(
+            &profile,
+            None,
+            &state.pool,
+            &state.api_semaphore,
+        )
+        .await
+        && info.has_update
+        && let Some(update_version_id) = &info.update_version_id
+    {
+        tracing::info!(
+            "Auto-updating modpack '{}' to version {}",
+            profile.name,
+            update_version_id,
+        );
+        if let Err(e) = update::update_managed_modrinth_version(
+            &profile.path,
+            update_version_id,
+        )
+        .await
+        {
+            tracing::warn!(
+                "Auto-update of modpack '{}' failed: {e}",
+                profile.name,
+            );
+        }
+    }
+
     let pre_launch_hooks = profile
         .hooks
         .pre_launch
@@ -1178,6 +1209,117 @@ pub async fn add_all_recursive_folder_paths(
     Ok(())
 }
 
+/// Check for a modpack update for a single profile and apply it if auto-update is enabled.
+/// Returns `true` if an update was applied.
+#[tracing::instrument]
+pub async fn auto_update_modpack_if_needed(path: &str) -> crate::Result<bool> {
+    let state = State::get().await?;
+
+    let Some(profile) = get(path).await? else {
+        return Ok(false);
+    };
+
+    if profile.auto_update_modpack != Some(true)
+        || profile.linked_data.is_none()
+    {
+        return Ok(false);
+    }
+
+    let Some(info) = crate::state::get_linked_modpack_info(
+        &profile,
+        None,
+        &state.pool,
+        &state.api_semaphore,
+    )
+    .await?
+    else {
+        return Ok(false);
+    };
+
+    if info.has_update
+        && let Some(update_version_id) = &info.update_version_id
+    {
+        tracing::info!(
+            "Auto-updating modpack '{}' to version {}",
+            profile.name,
+            update_version_id,
+        );
+        update::update_managed_modrinth_version(
+            &profile.path,
+            update_version_id,
+        )
+        .await?;
+        return Ok(true);
+    }
+
+    Ok(false)
+}
+
+/// Check all profiles for modpack updates and apply them automatically
+/// where `auto_update_modpack` is enabled.
+#[tracing::instrument]
+pub async fn auto_update_all_modpacks() -> crate::Result<()> {
+    let state = State::get().await?;
+    let profiles = Profile::get_all(&state.pool).await?;
+
+    for profile in &profiles {
+        if profile.auto_update_modpack != Some(true)
+            || profile.linked_data.is_none()
+        {
+            continue;
+        }
+
+        // Skip if the profile is currently running
+        let is_running = state
+            .process_manager
+            .get_all()
+            .iter()
+            .any(|p| p.profile_path == profile.path);
+
+        if is_running {
+            tracing::debug!(
+                "Skipping auto-update for '{}' — profile is running",
+                profile.name,
+            );
+            continue;
+        }
+
+        let Ok(Some(info)) = crate::state::get_linked_modpack_info(
+            profile,
+            None,
+            &state.pool,
+            &state.api_semaphore,
+        )
+        .await
+        else {
+            continue;
+        };
+
+        if info.has_update
+            && let Some(update_version_id) = &info.update_version_id
+        {
+            tracing::info!(
+                "Background auto-updating modpack '{}' to version {}",
+                profile.name,
+                update_version_id,
+            );
+            if let Err(e) = update::update_managed_modrinth_version(
+                &profile.path,
+                update_version_id,
+            )
+            .await
+            {
+                tracing::warn!(
+                    "Background auto-update of modpack '{}' failed: {e}",
+                    profile.name,
+                );
+            }
+        }
+    }
+
+    Ok(())
+}
+
 pub fn sanitize_profile_name(input: &str) -> String {
     input.replace(
         ['/', '\\', '?', '*', ':', '\'', '\"', '|', '<', '>', '!'],
diff --git a/packages/app-lib/src/state/legacy_converter.rs b/packages/app-lib/src/state/legacy_converter.rs
index 9404c6ae0f..e765cf267c 100644
--- a/packages/app-lib/src/state/legacy_converter.rs
+++ b/packages/app-lib/src/state/legacy_converter.rs
@@ -376,6 +376,7 @@ where
                             .and_then(|x| x.wrapper.clone()),
                         post_exit: profile.hooks.and_then(|x| x.post_exit),
                     },
+                    auto_update_modpack: None,
                 }
                 .upsert(exec)
                 .await?;
diff --git a/packages/app-lib/src/state/profiles.rs b/packages/app-lib/src/state/profiles.rs
index c30412af22..c2e5bd11a4 100644
--- a/packages/app-lib/src/state/profiles.rs
+++ b/packages/app-lib/src/state/profiles.rs
@@ -57,6 +57,7 @@ pub struct Profile {
     pub force_fullscreen: Option<bool>,
     pub game_resolution: Option<WindowSize>,
     pub hooks: Hooks,
+    pub auto_update_modpack: Option<bool>,
 }
 
 #[derive(Serialize, Deserialize, Clone, Copy, Debug, Eq, PartialEq)]
@@ -315,6 +316,7 @@ struct ProfileQueryResult {
     override_hook_post_exit: Option<String>,
     protocol_version: Option<i64>,
     launcher_feature_version: String,
+    auto_update_modpack: Option<i64>,
 }
 
 impl TryFrom<ProfileQueryResult> for Profile {
@@ -387,6 +389,7 @@ impl TryFrom<ProfileQueryResult> for Profile {
                 wrapper: x.override_hook_wrapper,
                 post_exit: x.override_hook_post_exit,
             },
+            auto_update_modpack: x.auto_update_modpack.map(|x| x == 1),
         })
     }
 }
@@ -406,7 +409,8 @@ macro_rules! select_profiles_with_predicate {
                 override_java_path,
                 json(override_extra_launch_args) as "override_extra_launch_args!: serde_json::Value", json(override_custom_env_vars) as "override_custom_env_vars!: serde_json::Value",
                 override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,
-                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit
+                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,
+                auto_update_modpack
             FROM profiles
             "#
                 + $predicate,
@@ -527,7 +531,8 @@ impl Profile {
                 override_java_path, override_extra_launch_args, override_custom_env_vars,
                 override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,
                 override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,
-                protocol_version, launcher_feature_version
+                protocol_version, launcher_feature_version,
+                auto_update_modpack
             )
             VALUES (
                 $1, $2, $3, $4,
@@ -539,7 +544,8 @@ impl Profile {
                 $18, jsonb($19), jsonb($20),
                 $21, $22, $23, $24,
                 $25, $26, $27,
-                $28, $29
+                $28, $29,
+                $30
             )
             ON CONFLICT (path) DO UPDATE SET
                 install_stage = $2,
@@ -577,7 +583,8 @@ impl Profile {
                 override_hook_post_exit = $27,
 
                 protocol_version = $28,
-                launcher_feature_version = $29
+                launcher_feature_version = $29,
+                auto_update_modpack = $30
             ",
             self.path,
             install_stage,
@@ -607,7 +614,8 @@ impl Profile {
             self.hooks.wrapper,
             self.hooks.post_exit,
             self.protocol_version,
-            launcher_feature_version
+            launcher_feature_version,
+            self.auto_update_modpack
         )
             .execute(exec)
             .await?;

From 166c53bcbe18b9655bc45eb8984acba155d1b6fb Mon Sep 17 00:00:00 2001
From: amnesiaof <dolombovskyyalexs@gmail.com>
Date: Thu, 18 Jun 2026 20:21:37 +0300
Subject: [PATCH 3/4] revert

---
 apps/frontend/AGENTS.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/apps/frontend/AGENTS.md b/apps/frontend/AGENTS.md
index e69de29bb2..ceb2b988dc 120000
--- a/apps/frontend/AGENTS.md
+++ b/apps/frontend/AGENTS.md
@@ -0,0 +1 @@
+CLAUDE.md

From a5385ff44bb70419996eed5e2bf296674ea3452c Mon Sep 17 00:00:00 2001
From: amnesiaof <dolombovskyyalexs@gmail.com>
Date: Thu, 18 Jun 2026 20:26:47 +0300
Subject: [PATCH 4/4] feat(app): auto-update linked modpacks before launch and
 in background

---
 .../ui/instance_settings/GeneralSettings.vue  |  37 +++++
 apps/app-frontend/src/helpers/profile.ts      |   5 +
 apps/app-frontend/src/helpers/types.d.ts      |   1 +
 .../app-frontend/src/locales/en-US/index.json |   6 +
 apps/app/build.rs                             |   1 +
 apps/app/src/api/profile.rs                   |  18 +++
 apps/app/src/main.rs                          |  13 ++
 ...63a1388ef538e4b80680bce4b668b182b4f42.json |  12 --
 ...d0494058373b484ca8ac44a02edb7a4cc444.json} |  10 +-
 ...fa00083022e0a4b0437a3e613c84e76f2d5c.json} |  10 +-
 ...b207c848c1d4cf7c30243b5c2cfd6a6f11597.json |  12 ++
 ...20260618000000_add-auto-update-modpack.sql |   1 +
 packages/app-lib/src/api/profile/create.rs    |   1 +
 packages/app-lib/src/api/profile/mod.rs       | 142 ++++++++++++++++++
 .../app-lib/src/state/legacy_converter.rs     |   1 +
 packages/app-lib/src/state/profiles.rs        |  18 ++-
 16 files changed, 267 insertions(+), 21 deletions(-)
 delete mode 100644 packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json
 rename packages/app-lib/.sqlx/{query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json => query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json} (93%)
 rename packages/app-lib/.sqlx/{query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json => query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json} (93%)
 create mode 100644 packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json
 create mode 100644 packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql

diff --git a/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue b/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue
index e30bead729..85a2df3500 100644
--- a/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue
+++ b/apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue
@@ -9,6 +9,7 @@ import {
 	injectNotificationManager,
 	OverflowMenu,
 	StyledInput,
+	Toggle,
 	useVIntl,
 } from '@modrinth/ui'
 import { useQueryClient } from '@tanstack/vue-query'
@@ -44,6 +45,21 @@ const releaseChannelDisabledItems = computed<ReleaseChannel[]>(() =>
 	savingReleaseChannel.value ? [...releaseChannelOptions] : [],
 )
 
+const autoUpdateModpack = ref(instance.value.auto_update_modpack ?? false)
+
+const hasLinkedModpack = computed(() => !!instance.value.linked_data)
+
+watch(autoUpdateModpack, async (value) => {
+	await edit(instance.value.path, { auto_update_modpack: value }).catch(handleError)
+})
+
+watch(
+	() => instance.value.auto_update_modpack,
+	(val) => {
+		autoUpdateModpack.value = val ?? false
+	},
+)
+
 const newCategoryInput = ref('')
 
 const installing = computed(() => instance.value.install_stage !== 'installed')
@@ -263,6 +279,15 @@ const messages = defineMessages({
 		id: 'instance.settings.tabs.general.update-channel.select',
 		defaultMessage: 'Select update channel',
 	},
+	autoUpdateModpack: {
+		id: 'instance.settings.tabs.general.auto-update-modpack',
+		defaultMessage: 'Auto-update modpack',
+	},
+	autoUpdateModpackDescription: {
+		id: 'instance.settings.tabs.general.auto-update-modpack.description',
+		defaultMessage:
+			'Automatically update this modpack to the latest version. Updates are checked before launching and periodically in the background.',
+	},
 	deleteInstance: {
 		id: 'instance.settings.tabs.general.delete',
 		defaultMessage: 'Delete instance',
@@ -409,6 +434,18 @@ const messages = defineMessages({
 			</p>
 		</div>
 
+		<div v-if="hasLinkedModpack" class="flex items-center justify-between gap-4 mt-6">
+			<div>
+				<h2 class="m-0 text-lg font-semibold text-contrast">
+					{{ formatMessage(messages.autoUpdateModpack) }}
+				</h2>
+				<p class="m-0 mt-1 text-sm">
+					{{ formatMessage(messages.autoUpdateModpackDescription) }}
+				</p>
+			</div>
+			<Toggle id="auto-update-modpack" v-model="autoUpdateModpack" />
+		</div>
+
 		<div class="flex flex-col gap-2.5 mt-6">
 			<h2 id="delete-instance-label" class="m-0 text-lg font-semibold text-contrast block">
 				{{ formatMessage(messages.deleteInstance) }}
diff --git a/apps/app-frontend/src/helpers/profile.ts b/apps/app-frontend/src/helpers/profile.ts
index be3b62c6ef..d4ffcd4707 100644
--- a/apps/app-frontend/src/helpers/profile.ts
+++ b/apps/app-frontend/src/helpers/profile.ts
@@ -242,6 +242,11 @@ export async function update_managed_modrinth_version(
 	})
 }
 
+// Auto-update all modpacks with auto_update_modpack enabled
+export async function auto_update_all_modpacks(): Promise<void> {
+	return await invoke('plugin:profile|profile_auto_update_all_modpacks')
+}
+
 // Repair a managed Modrinth profile
 export async function update_repair_modrinth(path: string): Promise<void> {
 	return await invoke('plugin:profile|profile_repair_managed_modrinth', { path })
diff --git a/apps/app-frontend/src/helpers/types.d.ts b/apps/app-frontend/src/helpers/types.d.ts
index 143997702f..f659f2d9cc 100644
--- a/apps/app-frontend/src/helpers/types.d.ts
+++ b/apps/app-frontend/src/helpers/types.d.ts
@@ -31,6 +31,7 @@ export type GameInstance = {
 	force_fullscreen?: boolean
 	game_resolution?: [number, number]
 	hooks: Hooks
+	auto_update_modpack?: boolean
 }
 
 type InstallStage =
diff --git a/apps/app-frontend/src/locales/en-US/index.json b/apps/app-frontend/src/locales/en-US/index.json
index cf98dc3a76..cb3cb7e424 100644
--- a/apps/app-frontend/src/locales/en-US/index.json
+++ b/apps/app-frontend/src/locales/en-US/index.json
@@ -665,6 +665,12 @@
   "instance.settings.tabs.general": {
     "message": "General"
   },
+  "instance.settings.tabs.general.auto-update-modpack": {
+    "message": "Auto-update modpack"
+  },
+  "instance.settings.tabs.general.auto-update-modpack.description": {
+    "message": "Automatically update this modpack to the latest version. Updates are checked before launching and periodically in the background."
+  },
   "instance.settings.tabs.general.delete": {
     "message": "Delete instance"
   },
diff --git a/apps/app/build.rs b/apps/app/build.rs
index 1f78fcce47..58f683bdff 100644
--- a/apps/app/build.rs
+++ b/apps/app/build.rs
@@ -196,6 +196,7 @@ fn main() {
                         "profile_edit_icon",
                         "profile_export_mrpack",
                         "profile_get_pack_export_candidates",
+                        "profile_auto_update_all_modpacks",
                     ])
                     .default_permission(
                         DefaultPermissionRule::AllowAllCommands,
diff --git a/apps/app/src/api/profile.rs b/apps/app/src/api/profile.rs
index ab41af5887..cf8ab54e0e 100644
--- a/apps/app/src/api/profile.rs
+++ b/apps/app/src/api/profile.rs
@@ -43,6 +43,7 @@ pub fn init<R: tauri::Runtime>() -> tauri::plugin::TauriPlugin<R> {
             profile_edit_icon,
             profile_export_mrpack,
             profile_get_pack_export_candidates,
+            profile_auto_update_all_modpacks,
         ])
         .build()
 }
@@ -432,6 +433,20 @@ pub struct EditProfile {
     )]
     pub game_resolution: Option<Option<WindowSize>>,
     pub hooks: Option<Hooks>,
+
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "serde_with::rust::double_option"
+    )]
+    pub auto_update_modpack: Option<Option<bool>>,
+}
+
+// Auto-update all modpacks with auto_update_modpack enabled
+// invoke('plugin:profile|profile_auto_update_all_modpacks')
+#[tauri::command]
+pub async fn profile_auto_update_all_modpacks() -> Result<()> {
+    Ok(profile::auto_update_all_modpacks().await?)
 }
 
 // Edits a profile
@@ -480,6 +495,9 @@ pub async fn profile_edit(path: &str, edit_profile: EditProfile) -> Result<()> {
         if let Some(hooks) = edit_profile.hooks.clone() {
             prof.hooks = hooks;
         }
+        if let Some(auto_update_modpack) = edit_profile.auto_update_modpack {
+            prof.auto_update_modpack = auto_update_modpack;
+        }
 
         prof.modified = chrono::Utc::now();
 
diff --git a/apps/app/src/main.rs b/apps/app/src/main.rs
index 33d2da8796..8674e87da6 100644
--- a/apps/app/src/main.rs
+++ b/apps/app/src/main.rs
@@ -226,6 +226,19 @@ fn main() {
                 tracing::warn!("Failed to set window shadow: {e}");
             }
 
+            // Background task: auto-update modpacks every 60 minutes
+            tauri::async_runtime::spawn(async move {
+                // Wait for state to initialize before first check
+                tokio::time::sleep(std::time::Duration::from_secs(30)).await;
+                loop {
+                    tracing::debug!("Running background modpack auto-update check");
+                    if let Err(e) = theseus::profile::auto_update_all_modpacks().await {
+                        tracing::warn!("Background modpack auto-update failed: {e}");
+                    }
+                    tokio::time::sleep(std::time::Duration::from_secs(3600)).await;
+                }
+            });
+
             Ok(())
         });
 
diff --git a/packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json b/packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json
deleted file mode 100644
index acc106f94d..0000000000
--- a/packages/app-lib/.sqlx/query-22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "db_name": "SQLite",
-  "query": "\n            INSERT INTO profiles (\n                path, install_stage, name, icon_path,\n                game_version, mod_loader, mod_loader_version,\n                groups,\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path, override_extra_launch_args, override_custom_env_vars,\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                protocol_version, launcher_feature_version\n            )\n            VALUES (\n                $1, $2, $3, $4,\n                $5, $6, $7,\n                jsonb($8),\n                $9, $10, $11, $12,\n                $13, $14, $15,\n                $16, $17,\n                $18, jsonb($19), jsonb($20),\n                $21, $22, $23, $24,\n                $25, $26, $27,\n                $28, $29\n            )\n            ON CONFLICT (path) DO UPDATE SET\n                install_stage = $2,\n                name = $3,\n                icon_path = $4,\n\n                game_version = $5,\n                mod_loader = $6,\n                mod_loader_version = $7,\n\n                groups = jsonb($8),\n\n                linked_project_id = $9,\n                linked_version_id = $10,\n                locked = $11,\n                preferred_update_channel = $12,\n\n                created = $13,\n                modified = $14,\n                last_played = $15,\n\n                submitted_time_played = $16,\n                recent_time_played = $17,\n\n                override_java_path = $18,\n                override_extra_launch_args = jsonb($19),\n                override_custom_env_vars = jsonb($20),\n                override_mc_memory_max = $21,\n                override_mc_force_fullscreen = $22,\n                override_mc_game_resolution_x = $23,\n                override_mc_game_resolution_y = $24,\n\n                override_hook_pre_launch = $25,\n                override_hook_wrapper = $26,\n                override_hook_post_exit = $27,\n\n                protocol_version = $28,\n                launcher_feature_version = $29\n            ",
-  "describe": {
-    "columns": [],
-    "parameters": {
-      "Right": 29
-    },
-    "nullable": []
-  },
-  "hash": "22202dacf6b5bade90c909cb4a663a1388ef538e4b80680bce4b668b182b4f42"
-}
diff --git a/packages/app-lib/.sqlx/query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json b/packages/app-lib/.sqlx/query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json
similarity index 93%
rename from packages/app-lib/.sqlx/query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json
rename to packages/app-lib/.sqlx/query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json
index 6f16a301a4..47a2543c4f 100644
--- a/packages/app-lib/.sqlx/query-be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5.json
+++ b/packages/app-lib/.sqlx/query-6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444.json
@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit\n            FROM profiles\n            WHERE 1=$1",
+  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                auto_update_modpack\n            FROM profiles\n            WHERE 1=$1",
   "describe": {
     "columns": [
       {
@@ -147,6 +147,11 @@
         "name": "override_hook_post_exit",
         "ordinal": 28,
         "type_info": "Text"
+      },
+      {
+        "name": "auto_update_modpack",
+        "ordinal": 29,
+        "type_info": "Integer"
       }
     ],
     "parameters": {
@@ -181,8 +186,9 @@
       true,
       true,
       true,
+      true,
       true
     ]
   },
-  "hash": "be21bfd7c36fd8c69dfffe0299eeb7e57590dc75b721dd823d00572f428d0bc5"
+  "hash": "6641176d0102e8219a42d2207a06d0494058373b484ca8ac44a02edb7a4cc444"
 }
diff --git a/packages/app-lib/.sqlx/query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json b/packages/app-lib/.sqlx/query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json
similarity index 93%
rename from packages/app-lib/.sqlx/query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json
rename to packages/app-lib/.sqlx/query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json
index 775055ea41..2e1bf890b2 100644
--- a/packages/app-lib/.sqlx/query-de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97.json
+++ b/packages/app-lib/.sqlx/query-df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c.json
@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit\n            FROM profiles\n            WHERE path IN (SELECT value FROM json_each($1))",
+  "query": "\n            SELECT\n                path, install_stage, launcher_feature_version, name, icon_path,\n                game_version, protocol_version, mod_loader, mod_loader_version,\n                json(groups) as \"groups!: serde_json::Value\",\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path,\n                json(override_extra_launch_args) as \"override_extra_launch_args!: serde_json::Value\", json(override_custom_env_vars) as \"override_custom_env_vars!: serde_json::Value\",\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                auto_update_modpack\n            FROM profiles\n            WHERE path IN (SELECT value FROM json_each($1))",
   "describe": {
     "columns": [
       {
@@ -147,6 +147,11 @@
         "name": "override_hook_post_exit",
         "ordinal": 28,
         "type_info": "Text"
+      },
+      {
+        "name": "auto_update_modpack",
+        "ordinal": 29,
+        "type_info": "Integer"
       }
     ],
     "parameters": {
@@ -181,8 +186,9 @@
       true,
       true,
       true,
+      true,
       true
     ]
   },
-  "hash": "de1887a95766303d16ddcad7fe7f34e0a64101ead329bcc88e55e31b32578a97"
+  "hash": "df575bd90e6725b75cce9366ff27fa00083022e0a4b0437a3e613c84e76f2d5c"
 }
diff --git a/packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json b/packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json
new file mode 100644
index 0000000000..30621991bc
--- /dev/null
+++ b/packages/app-lib/.sqlx/query-f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597.json
@@ -0,0 +1,12 @@
+{
+  "db_name": "SQLite",
+  "query": "\n            INSERT INTO profiles (\n                path, install_stage, name, icon_path,\n                game_version, mod_loader, mod_loader_version,\n                groups,\n                linked_project_id, linked_version_id, locked, preferred_update_channel,\n                created, modified, last_played,\n                submitted_time_played, recent_time_played,\n                override_java_path, override_extra_launch_args, override_custom_env_vars,\n                override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,\n                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,\n                protocol_version, launcher_feature_version,\n                auto_update_modpack\n            )\n            VALUES (\n                $1, $2, $3, $4,\n                $5, $6, $7,\n                jsonb($8),\n                $9, $10, $11, $12,\n                $13, $14, $15,\n                $16, $17,\n                $18, jsonb($19), jsonb($20),\n                $21, $22, $23, $24,\n                $25, $26, $27,\n                $28, $29,\n                $30\n            )\n            ON CONFLICT (path) DO UPDATE SET\n                install_stage = $2,\n                name = $3,\n                icon_path = $4,\n\n                game_version = $5,\n                mod_loader = $6,\n                mod_loader_version = $7,\n\n                groups = jsonb($8),\n\n                linked_project_id = $9,\n                linked_version_id = $10,\n                locked = $11,\n                preferred_update_channel = $12,\n\n                created = $13,\n                modified = $14,\n                last_played = $15,\n\n                submitted_time_played = $16,\n                recent_time_played = $17,\n\n                override_java_path = $18,\n                override_extra_launch_args = jsonb($19),\n                override_custom_env_vars = jsonb($20),\n                override_mc_memory_max = $21,\n                override_mc_force_fullscreen = $22,\n                override_mc_game_resolution_x = $23,\n                override_mc_game_resolution_y = $24,\n\n                override_hook_pre_launch = $25,\n                override_hook_wrapper = $26,\n                override_hook_post_exit = $27,\n\n                protocol_version = $28,\n                launcher_feature_version = $29,\n                auto_update_modpack = $30\n            ",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Right": 30
+    },
+    "nullable": []
+  },
+  "hash": "f3fd719bd016b84c314631fd256b207c848c1d4cf7c30243b5c2cfd6a6f11597"
+}
diff --git a/packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql b/packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql
new file mode 100644
index 0000000000..a6835f5056
--- /dev/null
+++ b/packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql
@@ -0,0 +1 @@
+ALTER TABLE profiles ADD COLUMN auto_update_modpack INTEGER NULL;
diff --git a/packages/app-lib/src/api/profile/create.rs b/packages/app-lib/src/api/profile/create.rs
index c1a1491c1b..21d8f31548 100644
--- a/packages/app-lib/src/api/profile/create.rs
+++ b/packages/app-lib/src/api/profile/create.rs
@@ -102,6 +102,7 @@ pub async fn profile_create(
             wrapper: None,
             post_exit: None,
         },
+        auto_update_modpack: None,
     };
 
     let result = async {
diff --git a/packages/app-lib/src/api/profile/mod.rs b/packages/app-lib/src/api/profile/mod.rs
index a7f2f113ac..b58ba3d537 100644
--- a/packages/app-lib/src/api/profile/mod.rs
+++ b/packages/app-lib/src/api/profile/mod.rs
@@ -819,6 +819,37 @@ async fn run_credentials(
         ))
     })?;
 
+    // Auto-update modpack if enabled and an update is available
+    if profile.auto_update_modpack == Some(true)
+        && profile.linked_data.is_some()
+        && let Ok(Some(info)) = crate::state::get_linked_modpack_info(
+            &profile,
+            None,
+            &state.pool,
+            &state.api_semaphore,
+        )
+        .await
+        && info.has_update
+        && let Some(update_version_id) = &info.update_version_id
+    {
+        tracing::info!(
+            "Auto-updating modpack '{}' to version {}",
+            profile.name,
+            update_version_id,
+        );
+        if let Err(e) = update::update_managed_modrinth_version(
+            &profile.path,
+            update_version_id,
+        )
+        .await
+        {
+            tracing::warn!(
+                "Auto-update of modpack '{}' failed: {e}",
+                profile.name,
+            );
+        }
+    }
+
     let pre_launch_hooks = profile
         .hooks
         .pre_launch
@@ -1178,6 +1209,117 @@ pub async fn add_all_recursive_folder_paths(
     Ok(())
 }
 
+/// Check for a modpack update for a single profile and apply it if auto-update is enabled.
+/// Returns `true` if an update was applied.
+#[tracing::instrument]
+pub async fn auto_update_modpack_if_needed(path: &str) -> crate::Result<bool> {
+    let state = State::get().await?;
+
+    let Some(profile) = get(path).await? else {
+        return Ok(false);
+    };
+
+    if profile.auto_update_modpack != Some(true)
+        || profile.linked_data.is_none()
+    {
+        return Ok(false);
+    }
+
+    let Some(info) = crate::state::get_linked_modpack_info(
+        &profile,
+        None,
+        &state.pool,
+        &state.api_semaphore,
+    )
+    .await?
+    else {
+        return Ok(false);
+    };
+
+    if info.has_update
+        && let Some(update_version_id) = &info.update_version_id
+    {
+        tracing::info!(
+            "Auto-updating modpack '{}' to version {}",
+            profile.name,
+            update_version_id,
+        );
+        update::update_managed_modrinth_version(
+            &profile.path,
+            update_version_id,
+        )
+        .await?;
+        return Ok(true);
+    }
+
+    Ok(false)
+}
+
+/// Check all profiles for modpack updates and apply them automatically
+/// where `auto_update_modpack` is enabled.
+#[tracing::instrument]
+pub async fn auto_update_all_modpacks() -> crate::Result<()> {
+    let state = State::get().await?;
+    let profiles = Profile::get_all(&state.pool).await?;
+
+    for profile in &profiles {
+        if profile.auto_update_modpack != Some(true)
+            || profile.linked_data.is_none()
+        {
+            continue;
+        }
+
+        // Skip if the profile is currently running
+        let is_running = state
+            .process_manager
+            .get_all()
+            .iter()
+            .any(|p| p.profile_path == profile.path);
+
+        if is_running {
+            tracing::debug!(
+                "Skipping auto-update for '{}' — profile is running",
+                profile.name,
+            );
+            continue;
+        }
+
+        let Ok(Some(info)) = crate::state::get_linked_modpack_info(
+            profile,
+            None,
+            &state.pool,
+            &state.api_semaphore,
+        )
+        .await
+        else {
+            continue;
+        };
+
+        if info.has_update
+            && let Some(update_version_id) = &info.update_version_id
+        {
+            tracing::info!(
+                "Background auto-updating modpack '{}' to version {}",
+                profile.name,
+                update_version_id,
+            );
+            if let Err(e) = update::update_managed_modrinth_version(
+                &profile.path,
+                update_version_id,
+            )
+            .await
+            {
+                tracing::warn!(
+                    "Background auto-update of modpack '{}' failed: {e}",
+                    profile.name,
+                );
+            }
+        }
+    }
+
+    Ok(())
+}
+
 pub fn sanitize_profile_name(input: &str) -> String {
     input.replace(
         ['/', '\\', '?', '*', ':', '\'', '\"', '|', '<', '>', '!'],
diff --git a/packages/app-lib/src/state/legacy_converter.rs b/packages/app-lib/src/state/legacy_converter.rs
index 9404c6ae0f..e765cf267c 100644
--- a/packages/app-lib/src/state/legacy_converter.rs
+++ b/packages/app-lib/src/state/legacy_converter.rs
@@ -376,6 +376,7 @@ where
                             .and_then(|x| x.wrapper.clone()),
                         post_exit: profile.hooks.and_then(|x| x.post_exit),
                     },
+                    auto_update_modpack: None,
                 }
                 .upsert(exec)
                 .await?;
diff --git a/packages/app-lib/src/state/profiles.rs b/packages/app-lib/src/state/profiles.rs
index c30412af22..c2e5bd11a4 100644
--- a/packages/app-lib/src/state/profiles.rs
+++ b/packages/app-lib/src/state/profiles.rs
@@ -57,6 +57,7 @@ pub struct Profile {
     pub force_fullscreen: Option<bool>,
     pub game_resolution: Option<WindowSize>,
     pub hooks: Hooks,
+    pub auto_update_modpack: Option<bool>,
 }
 
 #[derive(Serialize, Deserialize, Clone, Copy, Debug, Eq, PartialEq)]
@@ -315,6 +316,7 @@ struct ProfileQueryResult {
     override_hook_post_exit: Option<String>,
     protocol_version: Option<i64>,
     launcher_feature_version: String,
+    auto_update_modpack: Option<i64>,
 }
 
 impl TryFrom<ProfileQueryResult> for Profile {
@@ -387,6 +389,7 @@ impl TryFrom<ProfileQueryResult> for Profile {
                 wrapper: x.override_hook_wrapper,
                 post_exit: x.override_hook_post_exit,
             },
+            auto_update_modpack: x.auto_update_modpack.map(|x| x == 1),
         })
     }
 }
@@ -406,7 +409,8 @@ macro_rules! select_profiles_with_predicate {
                 override_java_path,
                 json(override_extra_launch_args) as "override_extra_launch_args!: serde_json::Value", json(override_custom_env_vars) as "override_custom_env_vars!: serde_json::Value",
                 override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,
-                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit
+                override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,
+                auto_update_modpack
             FROM profiles
             "#
                 + $predicate,
@@ -527,7 +531,8 @@ impl Profile {
                 override_java_path, override_extra_launch_args, override_custom_env_vars,
                 override_mc_memory_max, override_mc_force_fullscreen, override_mc_game_resolution_x, override_mc_game_resolution_y,
                 override_hook_pre_launch, override_hook_wrapper, override_hook_post_exit,
-                protocol_version, launcher_feature_version
+                protocol_version, launcher_feature_version,
+                auto_update_modpack
             )
             VALUES (
                 $1, $2, $3, $4,
@@ -539,7 +544,8 @@ impl Profile {
                 $18, jsonb($19), jsonb($20),
                 $21, $22, $23, $24,
                 $25, $26, $27,
-                $28, $29
+                $28, $29,
+                $30
             )
             ON CONFLICT (path) DO UPDATE SET
                 install_stage = $2,
@@ -577,7 +583,8 @@ impl Profile {
                 override_hook_post_exit = $27,
 
                 protocol_version = $28,
-                launcher_feature_version = $29
+                launcher_feature_version = $29,
+                auto_update_modpack = $30
             ",
             self.path,
             install_stage,
@@ -607,7 +614,8 @@ impl Profile {
             self.hooks.wrapper,
             self.hooks.post_exit,
             self.protocol_version,
-            launcher_feature_version
+            launcher_feature_version,
+            self.auto_update_modpack
         )
             .execute(exec)
             .await?;