diff --git a/algorithm-exercises-java/build.gradle b/algorithm-exercises-java/build.gradle
index a517171..bd6638a 100644
--- a/algorithm-exercises-java/build.gradle
+++ b/algorithm-exercises-java/build.gradle
@@ -48,7 +48,7 @@ tasks.named('test') {
 }
 
 checkstyle {
-    toolVersion = '10.20.2'
+    toolVersion = '10.21.0'
     configFile = file("${rootDir}/checkstyle.xml")
     maxErrors	= 0
     maxWarnings	= 0