diff --git a/build.gradle b/build.gradle
index 41fcec89..e2e0f5a2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 	id 'maven-publish'
 	id 'signing'
 	id 'pmd' // code check, working on source code
-	id 'com.diffplug.spotless' version '6.1.0'//code format
+	id 'com.diffplug.spotless' version '6.16.0'//code format
 	id 'com.github.spotbugs' version '5.0.4' // code check, working on byte code
 	id 'de.undercouch.download' version '4.1.2'
 	id 'kr.motd.sphinx' version '2.10.1' // documentation generation