diff --git a/build.gradle b/build.gradle
index 81ea3e9..dfd481e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 plugins {
     id 'java'
     id 'com.gradleup.shadow' version '9.4.0'
-    id 'com.diffplug.spotless' version '8.3.0'
+    id 'com.diffplug.spotless' version '8.4.0'
 }
 
 group = 'org.maboroshi'