diff --git a/pom.xml b/pom.xml
index aa541fb2e..1e4877347 100644
--- a/pom.xml
+++ b/pom.xml
@@ -575,7 +575,6 @@
     <commons.rc.version>RC1</commons.rc.version>
     <checkstyle.version>3.2.0</checkstyle.version>
     <checkstyle.dep.version>9.3</checkstyle.dep.version>
-    <commons.pmd-impl.version>6.52.0</commons.pmd-impl.version>
 
     <commons.site.path>collections</commons.site.path>
     <commons.scmPubUrl>https://svn.apache.org/repos/infra/websites/production/commons/content/proper/commons-collections</commons.scmPubUrl>