diff --git a/history.en.md b/history.en.md
index 4eba96353..a9efb9ee5 100644
--- a/history.en.md
+++ b/history.en.md
@@ -1,6 +1,8 @@
 # History
 
  - master/HEAD
+ - 3.8.21 (2022.2.13)
+   * Accept dragged items from TST Bookmarks Subpanel 1.2.4 and later.
  - 3.8.20 (2022.2.8)
    * Fix odd behaviors around drag operations on Firefox 97 and later.
    * Inherit container from the active tab to new tabs more safely by reopening, without losing their URL.
diff --git a/history.ja.md b/history.ja.md
index 2e82979f1..56415d3bd 100644
--- a/history.ja.md
+++ b/history.ja.md
@@ -1,6 +1,8 @@
 # 更新履歴
 
  - master/HEAD
+ - 3.8.21 (2022.2.13)
+   * TST Bookmarks Subpanel 1.2.4以降のバージョンからドロップされた項目の読み込みに失敗する問題を修正
  - 3.8.20 (2022.2.8)
    * Firefox 97以降でドラッグ操作の挙動が不安定になっていたのを修正
    * 新しく開かれたタブにアクティブなタブからコンテナーを引き継ぐ際に、タブの開き直しでURLが変わってしまわないようにした
diff --git a/webextensions/manifest.json b/webextensions/manifest.json
index f0463d0f8..c67ed4fca 100644
--- a/webextensions/manifest.json
+++ b/webextensions/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "__MSG_extensionName__",
-  "version": "3.8.20",
+  "version": "3.8.21",
   "author": "YUKI \"Piro\" Hiroshi",
   "description": "__MSG_extensionDescription__",
   "permissions": [