diff --git a/compile-kotlin-test/build.gradle.kts b/compile-kotlin-test/build.gradle.kts
index 4d9a0e7..ed71fa4 100644
--- a/compile-kotlin-test/build.gradle.kts
+++ b/compile-kotlin-test/build.gradle.kts
@@ -14,8 +14,8 @@ buildscript {
 plugins {
     id("java")
     id("org.domaframework.doma.compile")
-    id("org.jetbrains.kotlin.jvm") version "2.0.20"
-    id("org.jetbrains.kotlin.kapt") version "2.0.20"
+    id("org.jetbrains.kotlin.jvm") version "2.0.21"
+    id("org.jetbrains.kotlin.kapt") version "2.0.21"
 }
 
 val domaVersion = "3.0.1"
diff --git a/compile-mix-test/build.gradle.kts b/compile-mix-test/build.gradle.kts
index 8cd6674..7acafcd 100644
--- a/compile-mix-test/build.gradle.kts
+++ b/compile-mix-test/build.gradle.kts
@@ -14,8 +14,8 @@ buildscript {
 plugins {
     id("java")
     id("org.domaframework.doma.compile")
-    id("org.jetbrains.kotlin.jvm") version "2.0.20"
-    id("org.jetbrains.kotlin.kapt") version "2.0.20"
+    id("org.jetbrains.kotlin.jvm") version "2.0.21"
+    id("org.jetbrains.kotlin.kapt") version "2.0.21"
 }
 
 val domaVersion = "3.0.1"