diff --git a/docs/package.json b/docs/package.json
index f98eb4f..2ad4566 100644
--- a/docs/package.json
+++ b/docs/package.json
@@ -10,7 +10,7 @@
 },
 "devDependencies": {
 "bootstrap": "^3.4.1",
- "browser-sync": "^2.13.0",
+ "browser-sync": "^3.0.4",
 "font-awesome": "^4.6.3",
 "gulp": "^4.0.2",
 "gulp-clean-css": "^2.0.10",
</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/mattdanielbrown/code-notes/pull/30.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/mattdanielbrown/code-notes/pull/30.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>