diff --git a/cie-java/build.gradle b/cie-java/build.gradle
index da675814..1936db03 100644
--- a/cie-java/build.gradle
+++ b/cie-java/build.gradle
@@ -4,7 +4,7 @@ plugins {
 
 // Apply the application plugin to add support for building a CLI application.
 	id 'application'
-	id "com.diffplug.spotless" version "6.20.0"
+	id "com.diffplug.spotless" version "6.21.0"
 }
 
 repositories {