diff --git a/app/package.json b/app/package.json
index d2fd3e2f..21c71519 100644
--- a/app/package.json
+++ b/app/package.json
@@ -1,6 +1,6 @@
 {
     "name": "thedesk",
-    "version": "21.2.0",
+    "version": "21.2.1",
     "codename": "Mayu",
     "description": "TheDesk is a Mastodon client for PC.",
     "repository": "https://github.com/cutls/TheDesk",
diff --git a/app/view/make/index.sample.html b/app/view/make/index.sample.html
index 5f2723d2..ccdd2287 100644
--- a/app/view/make/index.sample.html
+++ b/app/view/make/index.sample.html
@@ -1123,12 +1123,13 @@
 				<a href="https://thedesk.top" target="_blank">HP</a><br />
 				<a href="https://github.com/cutls/TheDesk" target="_blank">GitHub</a><br />
 				<br />
-				<div id="release-21-2-0_Mayu" class="release-do" style="display:none; ">
+				<div id="release-21-2-1_Mayu" class="release-do" style="display:none; ">
 					<br />
 					<a href="https://ja.mstdn.wiki/TheDesk" target="_blank">機能一覧</a><br />
 					Pixiv
 					FanboxやPatreonでは支援者様限定で様々なTheDeskに関する記事をご覧いただけます。最低月一更新。<br />
 					困ったときは、<a href="https://docs.thedesk.top">TheDesk Docs</a>をご覧ください。
+					<h5>Release Note 21.2.1 (Mayu)</h5>
 					<h5>Release Note 21.2.0 (Mayu)</h5>
 					<!--上のdivのidも変えてね-->
 					・テーマが自由かつ高度に編集可能に  <a onclick="udgEx('Cutls@cutls.com','main')" class="contributor"><img src="https://media.thedesk.top/accounts/avatars/000/000/001/original/d34ef8bb49d5e011.png">cutls</a><br>