diff --git a/Cargo.lock b/Cargo.lock
index 538da60338a6d..174813c5f7b07 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3087,6 +3087,15 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "convert_case"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "affbf0190ed2caf063e3def54ff444b449371d55c58e513a95ab98eca50adb49"
+dependencies = [
+ "unicode-segmentation",
+]
+
 [[package]]
 name = "cookie"
 version = "0.18.1"
@@ -3507,6 +3516,16 @@ dependencies = [
  "darling_macro 0.23.0",
 ]
 
+[[package]]
+name = "darling"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88490bf1b990d87eaaa7ac8aa887f629a08e7359765b4911faf63c3763347d23"
+dependencies = [
+ "darling_core 0.24.0",
+ "darling_macro 0.24.0",
+]
+
 [[package]]
 name = "darling_core"
 version = "0.20.11"
@@ -3548,6 +3567,19 @@ dependencies = [
  "syn 2.0.119",
 ]
 
+[[package]]
+name = "darling_core"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "084e274f91c482280130e1e34e0b8d6e66776a060d7b6de7b84289ca778868c4"
+dependencies = [
+ "ident_case",
+ "proc-macro2 1.0.106",
+ "quote 1.0.45",
+ "strsim",
+ "syn 3.0.3",
+]
+
 [[package]]
 name = "darling_macro"
 version = "0.20.11"
@@ -3581,6 +3613,17 @@ dependencies = [
  "syn 2.0.119",
 ]
 
+[[package]]
+name = "darling_macro"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68f5792fa0d41cd2325ce0ffa64f0a340eaebd4971a3a0c5e1ffd2cc488a355e"
+dependencies = [
+ "darling_core 0.24.0",
+ "quote 1.0.45",
+ "syn 3.0.3",
+]
+
 [[package]]
 name = "dashmap"
 version = "6.1.0"
@@ -8861,7 +8904,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "22505a5c94da8e3b7c2996394d1c933236c4d743e81a410bcca4e6989fc066a4"
 dependencies = [
  "bytes",
- "heck 0.4.1",
+ "heck 0.5.0",
  "itertools 0.12.1",
  "log",
  "multimap",
@@ -8881,7 +8924,7 @@ version = "0.13.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "be769465445e8c1474e9c5dac2018218498557af32d9ed057325ec9a41ae81bf"
 dependencies = [
- "heck 0.4.1",
+ "heck 0.5.0",
  "itertools 0.14.0",
  "log",
  "multimap",
@@ -8901,7 +8944,7 @@ version = "0.14.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "343d3bd7056eda839b03204e68deff7d1b13aba7af2b2fd16890697274262ee7"
 dependencies = [
- "heck 0.4.1",
+ "heck 0.5.0",
  "itertools 0.14.0",
  "log",
  "multimap",
@@ -10655,13 +10698,13 @@ dependencies = [
 
 [[package]]
 name = "serde_derive_internals"
-version = "0.29.1"
+version = "0.30.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18d26a20a969b9e3fdf2fc2d9f21eda6c40e2de84c9408bb5d3b05d499aae711"
+checksum = "f852137cce035d6a4df67ccce505ff6b3e9fd3a10e3e52b24dc71e650bb1a9bd"
 dependencies = [
  "proc-macro2 1.0.106",
  "quote 1.0.45",
- "syn 2.0.119",
+ "syn 3.0.3",
 ]
 
 [[package]]
@@ -11149,7 +11192,7 @@ version = "0.8.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c1c97747dbf44bb1ca44a561ece23508e99cb592e862f22222dcf42f51d1e451"
 dependencies = [
- "heck 0.4.1",
+ "heck 0.5.0",
  "proc-macro2 1.0.106",
  "quote 1.0.45",
  "syn 2.0.119",
@@ -11161,7 +11204,7 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "54254b8531cafa275c5e096f62d48c81435d1015405a91198ddb11e967301d40"
 dependencies = [
- "heck 0.4.1",
+ "heck 0.5.0",
  "proc-macro2 1.0.106",
  "quote 1.0.45",
  "syn 2.0.119",
@@ -13148,7 +13191,7 @@ dependencies = [
  "clap",
  "clap-verbosity-flag",
  "clap_complete",
- "convert_case 0.10.0",
+ "convert_case 0.11.0",
  "directories",
  "git2",
  "glob",
@@ -13523,13 +13566,13 @@ dependencies = [
 name = "vector-config-common"
 version = "0.1.0"
 dependencies = [
- "convert_case 0.10.0",
- "darling 0.23.0",
+ "convert_case 0.11.0",
+ "darling 0.24.0",
  "proc-macro2 1.0.106",
  "quote 1.0.45",
  "serde",
  "serde_json",
- "syn 2.0.119",
+ "syn 3.0.3",
  "tracing 0.1.44",
 ]
 
@@ -13537,12 +13580,12 @@ dependencies = [
 name = "vector-config-macros"
 version = "0.1.0"
 dependencies = [
- "darling 0.23.0",
+ "darling 0.24.0",
  "proc-macro2 1.0.106",
  "quote 1.0.45",
  "serde",
  "serde_derive_internals",
- "syn 2.0.119",
+ "syn 3.0.3",
  "vector-config",
  "vector-config-common",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 0e0697655c04c..5a24e89b5f0f7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -163,11 +163,11 @@ clap = { version = "4.5.60", default-features = false, features = ["derive", "er
 clap_complete = "4.6.5"
 colored = { version = "3.1.1", default-features = false }
 const-str = { version = "1.1.0", default-features = false }
-convert_case = { version = "0.10", default-features = false }
+convert_case = { version = "0.11", default-features = false }
 criterion = "0.8"
 crossbeam-utils = { version = "0.8.21", default-features = false }
 cuckoo-clock = { version = "0.2.7" , default-features = false }
-darling = { version = "0.23.0", default-features = false, features = ["suggestions"] }
+darling = { version = "0.24.0", default-features = false, features = ["suggestions"] }
 dashmap = { version = "6.1.0", default-features = false }
 derivative = { version = "2.2.0", default-features = false }
 exitcode = { version = "1.1.2", default-features = false }
diff --git a/lib/vector-config-common/Cargo.toml b/lib/vector-config-common/Cargo.toml
index b15a36cf28e7c..a9e74e531c503 100644
--- a/lib/vector-config-common/Cargo.toml
+++ b/lib/vector-config-common/Cargo.toml
@@ -13,6 +13,6 @@ darling.workspace = true
 proc-macro2 = { version = "1.0", default-features = false }
 serde.workspace = true
 serde_json.workspace = true
-syn = { version = "2.0", features = ["full", "extra-traits", "visit-mut", "visit"] }
+syn = { version = "3.0", features = ["full", "extra-traits", "visit-mut", "visit"] }
 tracing.workspace = true
 quote = { version = "1.0", default-features = false }
diff --git a/lib/vector-config-macros/Cargo.toml b/lib/vector-config-macros/Cargo.toml
index 2cd6f28a3faa4..642274db56da3 100644
--- a/lib/vector-config-macros/Cargo.toml
+++ b/lib/vector-config-macros/Cargo.toml
@@ -14,8 +14,8 @@ proc-macro = true
 darling.workspace = true
 proc-macro2 = { version = "1.0", default-features = false }
 quote = { version = "1.0", default-features = false }
-serde_derive_internals = "0.29"
-syn = { version = "2.0", default-features = false, features = ["full", "extra-traits", "visit-mut", "visit"] }
+serde_derive_internals = "0.30"
+syn = { version = "3.0", default-features = false, features = ["full", "extra-traits", "visit-mut", "visit"] }
 vector-config-common = { path = "../vector-config-common" }
 
 [dev-dependencies]