diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0c7858..9e15b94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,29 @@
# Changelog
+## 0.4.0
+
+### Features
+
+- Tool execution approval: Claude's tool calls can now be reviewed and approved before execution with permission mode support - by **dobachi** [(b7e99)](https://github.com/d-kimuson/claude-code-viewer/commit/b7e9947)
+- Dark mode: UI now supports dark mode for better viewing experience in low-light environments - by **d-kimsuon**
+- Large workspace performance: Significantly improved performance for large workspaces with pagination and caching - by **d-kimsuon** [(c7d89)](https://github.com/d-kimuson/claude-code-viewer/commit/c7d89d4) [(d322d)](https://github.com/d-kimuson/claude-code-viewer/commit/d322db5)
+- Web-based git commit: Changes can now be committed directly from the diff panel in the web interface - by **d-kimsuon** [(017d3)](https://github.com/d-kimuson/claude-code-viewer/commit/017d374)
+- Latest conversation schema: Support for Claude Code's new conversation schema - by **d-kimsuon** [(9144f)](https://github.com/d-kimuson/claude-code-viewer/commit/9144f26)
+- Internationalization: UI is now available in English and Japanese - by **d-kimsuon** [(4a435)](https://github.com/d-kimuson/claude-code-viewer/commit/4a4354f)
+- System information: View system and environment details in a dedicated tab - by **d-kimsuon** [(0047b)](https://github.com/d-kimuson/claude-code-viewer/commit/0047b6b)
+- Bundled Claude Code: No need to install Claude Code separately - bundled version is automatically used when not found - by **d-kimsuon** [(6c4d3)](https://github.com/d-kimuson/claude-code-viewer/commit/6c4d301)
+
+### Bug Fixes
+
+- Compatibility: Fixed issues preventing use with Claude Code version 1.0.81 and earlier - by **d-kimsuon** [(b483e)](https://github.com/d-kimuson/claude-code-viewer/commit/b483e7e) [(a88ad)](https://github.com/d-kimuson/claude-code-viewer/commit/a88ad89) [(8d592)](https://github.com/d-kimuson/claude-code-viewer/commit/8d592ce)
+- Robustness: Improved handling of missing Claude projects directory and Node.js version compatibility - by **kouyaman345** [(42d02)](https://github.com/d-kimuson/claude-code-viewer/commit/42d028b)
+
+### Performance
+
+- Session synchronization: Sessions started from Claude Code now sync much faster - by **d-kimsuon** [(eb5a8)](https://github.com/d-kimuson/claude-code-viewer/commit/eb5a8dd)
+
+##### [View changes on GitHub](https://github.com/d-kimuson/claude-code-viewer/compare/v0.3.1...0.4.0)
+
## 0.4.0-beta.2
### Features
diff --git a/package.json b/package.json
index c9a6fb7..f7e1503 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
{
"name": "@kimuson/claude-code-viewer",
- "version": "0.4.0-beta.2",
+ "version": "0.4.0",
"type": "module",
"license": "MIT",
"repository": {