diff --git a/springmvc5-form-validation/pom.xml b/springmvc5-form-validation/pom.xml
index 57aa7a3..976dd35 100644
--- a/springmvc5-form-validation/pom.xml
+++ b/springmvc5-form-validation/pom.xml
@@ -16,7 +16,7 @@
 		<dependency>
 			<groupid>org.springframework</groupid>
 			<artifactid>spring-webmvc</artifactid>
-			<version>5.1.0.RELEASE</version>
+			<version>5.2.20.RELEASE</version>
 		</dependency>
 
 		
</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/RameshMF/spring-mvc-tutorial/pull/65.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/RameshMF/spring-mvc-tutorial/pull/65.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>