diff --git a/CHANGELOG.md b/CHANGELOG.md
index 15b680e..92a0f88 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.4.0] - 2026-08-29
 
 ### Changed
 
@@ -229,7 +229,8 @@ First release.
 - Tools and History views in the activity bar.
 - Localised UI (English, Japanese).
 
-[Unreleased]: https://github.com/kkdev92/quick-utils/compare/v0.3.0...HEAD
+[Unreleased]: https://github.com/kkdev92/quick-utils/compare/v0.4.0...HEAD
+[0.4.0]: https://github.com/kkdev92/quick-utils/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/kkdev92/quick-utils/compare/v0.2.0...v0.3.0
 [0.2.0]: https://github.com/kkdev92/quick-utils/compare/v0.1.0...v0.2.0
 [0.1.0]: https://github.com/kkdev92/quick-utils/releases/tag/v0.1.0
diff --git a/package-lock.json b/package-lock.json
index 2ea98ee..ef61bd4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "quick-utils",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "quick-utils",
-      "version": "0.3.0",
+      "version": "0.4.0",
       "license": "MIT",
       "dependencies": {
         "@kkdev92/vscode-ext-kit": "^3.0.0"
diff --git a/package.json b/package.json
index bd65457..e0efc8b 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "quick-utils",
   "displayName": "Quick Utils",
   "description": "%extension.description%",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "publisher": "kkdev92",
   "author": {
     "name": "kkdev92",