diff --git a/.github/workflows/format_rst.yml b/.github/workflows/format_rst.yml
index 16d399c..cf4e0f4 100644
--- a/.github/workflows/format_rst.yml
+++ b/.github/workflows/format_rst.yml
@@ -7,7 +7,7 @@ jobs:
 runs-on: ubuntu-latest
 steps:
 - name: Check out code
- uses: actions/checkout@v4
+ uses: actions/checkout@v5
 
 - name: Set up Python
 uses: actions/setup-python@v5
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://patch-diff.githubusercontent.com/raw/CodeByAidan/Cython-Tutorial/pull/23.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://patch-diff.githubusercontent.com/raw/CodeByAidan/Cython-Tutorial/pull/23.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>