diff --git a/history.en.md b/history.en.md
index 4a93c9f3d..ea8f5380f 100644
--- a/history.en.md
+++ b/history.en.md
@@ -1,6 +1,7 @@
 # History
 
  - master/HEAD
+ - 4.0.23 (2024.9.11)
    * Remove dependencies to CSS2 system colors deprecated at letely versions of Firefox.
    * Set `text/plain` drag data for shift-dragged tabs. Now you can drop tree items to any text input area.
    * Update overflow state of labels for recycled tab elements more certainly.
diff --git a/history.ja.md b/history.ja.md
index ee8d66080..41ede933a 100644
--- a/history.ja.md
+++ b/history.ja.md
@@ -1,6 +1,7 @@
 # 更新履歴
 
  - master/HEAD
+ - 4.0.23 (2024.9.11)
    * 最近のバージョンで廃止されたCSS2のシステムカラーを使わないようにした
    * Shift-ドラッグ時のタブのドラッグデータに`text/plain`型の表現を加え、任意のテキスト入力欄へドロップできるようにした
    * 再利用されたタブ要素のラベルのオーバーフロー状態をより正しく更新するようにした
diff --git a/webextensions/manifest.json b/webextensions/manifest.json
index 3a83bcf57..0b94c525f 100644
--- a/webextensions/manifest.json
+++ b/webextensions/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "__MSG_extensionName__",
-  "version": "4.0.22",
+  "version": "4.0.23",
   "author": "YUKI \"Piro\" Hiroshi",
   "description": "__MSG_extensionDescription__",
   "permissions": [