diff --git a/pom.xml b/pom.xml
index 802c204..051daa5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -101,7 +101,7 @@
 		<version.org.codehaus.mojo.tidy>1.1.0</version.org.codehaus.mojo.tidy>
 		<version.org.sonatype.plugins.nexus-staging>1.6.12</version.org.sonatype.plugins.nexus-staging>
 		<version.com.puppycrawl.tools.checkstyle>10.0</version.com.puppycrawl.tools.checkstyle>
-		<version.io.kokuwa.checkstyle>0.5.5</version.io.kokuwa.checkstyle>
+		<version.io.kokuwa.checkstyle>0.5.6</version.io.kokuwa.checkstyle>
 
 		<!-- dependencies -->