diff --git a/build.gradle b/build.gradle
index 9467212..4182e9c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -58,7 +58,7 @@ application {
 }
 
 pmd {
-    toolVersion = '7.19.0'
+    toolVersion = '7.20.0'
     ruleSetFiles = files 'pmd-ruleset.xml'
     ruleSets = [] // explicitly set to empty to avoid using default configuration
     ignoreFailures = false