diff --git a/test-clock-kotlin/build.gradle.kts b/test-clock-kotlin/build.gradle.kts
index a698c1b..e609e0f 100644
--- a/test-clock-kotlin/build.gradle.kts
+++ b/test-clock-kotlin/build.gradle.kts
@@ -1,6 +1,6 @@
 plugins {
     id("test-clock.java-conventions")
-    kotlin("jvm") version "2.0.0"
+    kotlin("jvm") version "2.0.21"
 }
 repositories {
     mavenCentral()