diff --git a/pom.xml b/pom.xml
index bf771cd..2537a1f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -24,7 +24,7 @@
 <dependency>
 <groupid>com.fasterxml.jackson.core</groupid>
 <artifactid>jackson-databind</artifactid>
- <version>2.9.9</version>
+ <version>2.13.4</version>
 </dependency>
 <dependency>
 <groupid>org.jetbrains</groupid>
</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/HD-Projects/Java-HTTP-Server/pull/13.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/HD-Projects/Java-HTTP-Server/pull/13.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>