diff --git a/build.gradle.kts b/build.gradle.kts
index c0bfd177..1b147b0f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -9,7 +9,7 @@ buildscript {
 
 plugins {
     id("application")
-    id("com.diffplug.spotless") version "6.12.1"
+    id("com.diffplug.spotless") version "6.17.0"
     id("org.seasar.doma.codegen") version "1.4.1"
     id("org.domaframework.doma.compile") version "2.0.0"
     kotlin("jvm") version "1.8.10"