diff --git a/history.en.md b/history.en.md
index 6b1553f1..e727f9f5 100644
--- a/history.en.md
+++ b/history.en.md
@@ -1,6 +1,8 @@
 # History
 
  - master/HEAD
+ - 3.1.8 (2020.8.5)
+   * Notify new features with a desktop notification instead of an annoying tab.
  - 3.1.7 (2020.8.5)
    * The option to list tabs hidden by other addons didn't work as expected.
  - 3.1.6 (2020.8.4)
diff --git a/history.ja.md b/history.ja.md
index 2087d8ad..7ed03660 100644
--- a/history.ja.md
+++ b/history.ja.md
@@ -1,6 +1,8 @@
 # 更新履歴
 
  - master/HEAD
+ - 3.1.8 (2020.8.5)
+   * 変更点の通知を煩わしい新規タブではなくデスクトップ通知で表示するようにした
  - 3.1.7 (2020.8.5)
    * 他のアドオンによって非表示にされたタブをリスト上に表示する設定のON/OFFが正しくUIに反映されていなかったのを修正
  - 3.1.6 (2020.8.4)
diff --git a/webextensions/manifest.json b/webextensions/manifest.json
index 344b2b12..3f2b97de 100644
--- a/webextensions/manifest.json
+++ b/webextensions/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "__MSG_extensionName__",
-  "version": "3.1.7",
+  "version": "3.1.8",
   "author": "YUKI \"Piro\" Hiroshi",
   "description": "__MSG_extensionDescription__",
   "permissions": [