diff --git a/build.gradle b/build.gradle
index 029fd6f..100809d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@ plugins {
 }
 
 ext {
-    checkstyleVersion = '13.4.0'
+    checkstyleVersion = '13.9.0'
 
     pmdVersion = '7.23.0'
 }