diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 674ba35..313cefe 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,7 @@ jobs:
 build:
 runs-on: ubuntu-latest
 steps:
- - uses: actions/checkout@v2
+ - uses: actions/checkout@v3
 - name: Use Node.js
 uses: actions/setup-node@v1
 with:
</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/react-bootstrap/react-router-bootstrap/pull/284.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/react-bootstrap/react-router-bootstrap/pull/284.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>