diff --git a/pom.xml b/pom.xml
index afac878..d3f5ffd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
     <spotbugs.version>4.9.8.2</spotbugs.version>
     <findsecbugs.version>1.14.0</findsecbugs.version>
     <pmd-plugin.version>3.28.0</pmd-plugin.version>
-    <pmd.version>7.20.0</pmd.version>
+    <pmd.version>7.21.0</pmd.version>
     <checkstyle-plugin.version>3.6.0</checkstyle-plugin.version>
     <checkstyle.version>13.0.0</checkstyle.version>