diff --git a/build.gradle b/build.gradle
index 8b064c6a2..27648c609 100644
--- a/build.gradle
+++ b/build.gradle
@@ -139,7 +139,7 @@ checkstyle {
 }
 
 pmd {
-  toolVersion = "6.40.0"
+  toolVersion = "6.55.0"
   sourceSets = [sourceSets.main]
   reportsDir = file("$project.buildDir/reports/pmd")
   // https://github.com/pmd/pmd/issues/876