diff --git a/p3c-pmd/pom.xml b/p3c-pmd/pom.xml
index 579352c3..365e089c 100644
--- a/p3c-pmd/pom.xml
+++ b/p3c-pmd/pom.xml
@@ -54,7 +54,7 @@
         <enforce.activate>true</enforce.activate>
         <maven-enforcer-plugin.version>3.5.0</maven-enforcer-plugin.version>
         <checkstyle.plugin.version>3.5.0</checkstyle.plugin.version>
-        <checkstyle.version>10.18.1</checkstyle.version>
+        <checkstyle.version>10.20.1</checkstyle.version>
         <checkstyle.configdir>src/site/resources/checkstyle
         </checkstyle.configdir>
     </properties>