diff --git a/history.en.md b/history.en.md
index 5350e637a..c70cd602f 100644
--- a/history.en.md
+++ b/history.en.md
@@ -1,6 +1,7 @@
 # History
 
  - master/HEAD
+ - 3.5.4 (2020.5.5)
    * Show semi-modal dialogs more smartly. The annoying flash from a small window before the dialog is finally shown goes away.
    * Add an option to show dialogs in the sidebar, under the "Appearance" section of the options page. It takes back the old behavior around dialogs for confirmation and bookmarking.
    * Reduce needless space below rendered columns of tabs tree in group tab pages.
diff --git a/history.ja.md b/history.ja.md
index dc3920e8f..3f45b3b08 100644
--- a/history.ja.md
+++ b/history.ja.md
@@ -1,6 +1,7 @@
 # 更新履歴
 
  - master/HEAD
+ - 3.5.4 (2020.5.5)
    * モーダル風ダイアログの表示サイズを、実際にウィンドウを開く前にある程度計算するようにして、初期化前のウィンドウによる不快なチラつきを低減した
    * 設定ページの「外観」配下に、ダイアログをサイドバー内に表示する（確認とブックマークのダイアログの動作を以前の物に戻す）設定を追加
    * グループ化用のタブ内で、ツリー構造の表示領域の下にあった無駄なスペースを減らした
diff --git a/webextensions/manifest.json b/webextensions/manifest.json
index 60d7cb03c..f6de68446 100644
--- a/webextensions/manifest.json
+++ b/webextensions/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "__MSG_extensionName__",
-  "version": "3.5.3",
+  "version": "3.5.4",
   "author": "YUKI \"Piro\" Hiroshi",
   "description": "__MSG_extensionDescription__",
   "permissions": [