diff --git a/RELEASES.md b/RELEASES.md
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+++ b/RELEASES.md
@@ -1,3 +1,48 @@
+## 2.1.219 — 2026-07-25 ✅ Current audited / 現在の監査済み版
+
+upstream claude-code 2.1.219 追従。Termux 実機検証済み（全テスト通過 / TUI 起動確認）。
+
+**Upstream highlights / 主な変更（upstream）**
+
+## What's changed
+
+- Added Claude Opus 5 (`claude-opus-5`), now the default Opus model — 1M context, fast mode at $10/$50 per Mtok
+- Added `sandbox.network.strictAllowlist` setting to deny non-allowlisted hosts for sandboxed commands without prompting
+- Added `DirectoryAdded` hook that fires after `/add-dir` or the SDK `register_repo_root` control request registers a new working directory mid-session
+- Added `mcp_server_errors` to the headless stream-json init event, listing `--mcp-config` entries skipped by config validation; terminal runs print a startup warning
+- Added the `workflowSizeGuideline` settings key so the advisory Dynamic workflow size guideline can be set from any settings file; the `/config` row is hidden while one does
+- Added nested subagent forwarding in stream-json: subagents spawned at depth-2+ now appear when `--forward-subagent-text` is set, keyed by their spawning Agent `tool_use` id
+- Fixed `claude -p` text output dropping the answer already produced when a turn dies on a mid-stream API error
+- Added HTTP status and error text to `claude mcp list` and `/mcp` when a server fails to connect, and a warning for MCP config values with hidden leading or trailing whitespace
+- Fixed a permission you approved while a self-hosted runner was restarting being dropped when the session resumed, so the approved action now runs
+- Fixed the Fable model row showing "Requires usage credits" for plans that include it, when a stale cache had baked the label in
+- Fixed a SIGTERM arriving while a self-hosted runner was starting up leaving a stale active row until the lease expired; it now deregisters cleanly
+- Added structured failure categories to self-hosted runner spawn and session failures, so hook errors, runner crashes and config errors can be told apart
+- Fixed the `/model` picker showing the merged Opus row as plain "Opus" instead of "Opus (1M context)"
+- Fixed copy-on-select inside GNU screen printing base64 into the terminal instead of copying the selection
+- Fixed Remote Control clients keeping a stale fast-mode status after a model switch, reconnect, or failed org check
+- Fixed `CLAUDE_CODE_GIT_BASH_PATH` on Windows exiting or being used as bash when the path isn't a bash/sh binary; it's now ignored with a warning
+- Fixed Vim mode: pressing ← on an empty prompt now returns to the agent view from NORMAL mode, not just INSERT
+- Fixed screen-reader mode rewriting the entire input line on every keystroke instead of echoing only the typed character
+- Improved the "Remote Control is only available via api.anthropic.com" error to name the specific setting that caused it
+- Improved `claude --teleport` to show which repo your current checkout points at when it doesn't match the session's repo
+- Changed dynamic workflows to default to a medium size guideline (aim for fewer than 15 agents); pick another size or unrestricted with Dynamic workflow size in `/config`
+- Changed managed MCP allowlist/denylist `${VAR}` entries to resolve from the startup environment and managed-settings env instead of settings-file env
+- Changed the `/model` picker to highlight only the newest model's name, so the highlight marks the new release rather than an arbitrary subset of the list
+- Added the current default workflow size to the running-workflow status line, with a pointer to `/config` for changing it
+- Removed Opus 4.7 from fast mode; `/fast` now applies to Opus 5 and Opus 4.8
+- Updated the claude-api skill to default to Claude Opus 5, with a migration path from Opus 4.8
+- Subagents can now spawn nested subagents up to depth 3 by default (was 1); set CLAUDE_CODE_MAX_SUBAGENT_SPAWN_DEPTH=1 to disable nesting
+
+```sh
+npm install -g @bash0816/claude-code@latest
+```
+
+```sh
+npm install -g @bash0816/claude-code@2.1.218
+```
+
+---
 ## 2.1.218 — 2026-07-24 ✅ Current audited / 現在の監査済み版
 
 upstream claude-code 2.1.218 追従。Termux 実機検証済み（全テスト通過 / TUI 起動確認）。