diff --git a/build.gradle b/build.gradle
index 40780267..3d2bd57b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -24,7 +24,7 @@ allprojects {
   }
 
   pmd {
-    toolVersion = "6.41.0"
+    toolVersion = "6.55.0"
     ignoreFailures = true
     incrementalAnalysis = true
     sourceSets = [sourceSets.main, sourceSets.test]