diff --git a/pom.xml b/pom.xml
index 10b026d862..4ec94cd575 100644
--- a/pom.xml
+++ b/pom.xml
@@ -98,7 +98,7 @@
         <javacc.version>5.0</javacc.version>
         <surefire.version>3.0.0-M8</surefire.version>
         <checkstyle.version>10.7.0</checkstyle.version>
-        <checkstyle.plugin.version>3.2.1</checkstyle.plugin.version>
+        <checkstyle.plugin.version>3.3.1</checkstyle.plugin.version>
         <pmd.plugin.version>3.21.2</pmd.plugin.version>
         <ant.version>1.10.13</ant.version>
         <javadoc.plugin.version>3.4.1</javadoc.plugin.version>
@@ -390,10 +390,7 @@
                         <configLocation>/net/sourceforge/pmd/pmd-checkstyle-config.xml</configLocation>
                         <suppressionsLocation>/net/sourceforge/pmd/pmd-checkstyle-suppressions.xml</suppressionsLocation>
                         <includeTestSourceDirectory>true</includeTestSourceDirectory>
-                        <sourceDirectories>
-                            <!-- this sets only src/main/java and ignores e.g. target/generated-sources/javacc -->
-                            <sourceDirectory>${project.build.sourceDirectory}</sourceDirectory>
-                        </sourceDirectories>
+                        <excludeGeneratedSources>true</excludeGeneratedSources>
                         <resourceIncludes>**/*.properties,**/*.less,**/*.kt</resourceIncludes>
                     </configuration>
                 </plugin>