diff --git a/unit-api-kotlin/build.gradle.kts b/unit-api-kotlin/build.gradle.kts
index 76fc9d32..a362fde1 100644
--- a/unit-api-kotlin/build.gradle.kts
+++ b/unit-api-kotlin/build.gradle.kts
@@ -1,7 +1,7 @@
 import com.github.benmanes.gradle.versions.updates.DependencyUpdatesTask
 
 plugins {
-    kotlin("jvm") version "2.3.20"
+    kotlin("jvm") version "2.3.21"
     id("org.jlleitschuh.gradle.ktlint") version "14.2.0"
 
     id("unit-api.java-conventions")