diff --git a/history.en.md b/history.en.md
index 5d0254c..49c9b51 100644
--- a/history.en.md
+++ b/history.en.md
@@ -1,6 +1,8 @@
 # History
 
  - master/HEAD
+ - 1.4.1 (2020.12.2)
+   * Add an option to deactivate the desktop notification.
  - 1.4.0 (2020.11.10)
    * Add ability to copy the tree (or descendants) instead of a tab. (require [Tree Style Tab](https://addons.mozilla.org/firefox/addon/tree-style-tab/))
    * Show notification message after successfully copied.
diff --git a/history.ja.md b/history.ja.md
index 3e71269..4675f31 100644
--- a/history.ja.md
+++ b/history.ja.md
@@ -1,6 +1,8 @@
 # 更新履歴
 
  - master/HEAD
+ - 1.4.1 (2020.12.2)
+   * デスクトップ通知を無効化する設定を追加
  - 1.4.0 (2020.11.10)
    * 単独のタブではなくツリー（または子孫のタブ）をコピーできるようにした（[Tree Style Tab](https://addons.mozilla.org/firefox/addon/tree-style-tab/)が必要）
    * コピーに成功した場合に通知メッセージを表示するようにした
diff --git a/manifest.json b/manifest.json
index 74ccab5..df2deac 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "__MSG_extensionName__",
-  "version": "1.4.0",
+  "version": "1.4.1",
   "author": "YUKI \"Piro\" Hiroshi",
   "description": "__MSG_extensionDescription__",
   "permissions": [