diff --git a/history.en.md b/history.en.md
index e9d73812c..857acc401 100644
--- a/history.en.md
+++ b/history.en.md
@@ -1,6 +1,7 @@
 # History
 
  - master/HEAD
+ - 3.9.17 (2023.9.8)
    * Handle tabs internally moved by TST itself more correctly. Reduced wrong placements of tabs opened from a pinned parent on some situations.
    * Optimize initialization process of the tab context menu on the sidebar page. Reduced delayed update of menu items after the menu appears on the screen.
    * Reduced visual gap between the last tab and the new tab button in a scrollable tab bar with the Proton theme.
diff --git a/history.ja.md b/history.ja.md
index bac0ce72e..e3e7dcc11 100644
--- a/history.ja.md
+++ b/history.ja.md
@@ -1,6 +1,7 @@
 # 更新履歴
 
  - master/HEAD
+ - 3.9.17 (2023.9.8)
    * TSTによる内部的なタブの再配置時の取り扱いを改善し、ピン留めされたタブを親として開かれた子タブが誤った位置に配置されにくくなるようにした
    * サイドバー上でのコンテキストメニューの初期化処理を最適化し、メニューが画面に現れてから遅れて項目が更新される様子を観測されにくくした
    * Protonテーマでの最後のタブと「新しいタブ」ボタンの間の無駄なスペースを減らした
diff --git a/webextensions/manifest.json b/webextensions/manifest.json
index a888ba247..3089285aa 100644
--- a/webextensions/manifest.json
+++ b/webextensions/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "__MSG_extensionName__",
-  "version": "3.9.16",
+  "version": "3.9.17",
   "author": "YUKI \"Piro\" Hiroshi",
   "description": "__MSG_extensionDescription__",
   "permissions": [