diff --git a/build.gradle.kts b/build.gradle.kts
index 60be817..498ab63 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -5,7 +5,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 plugins {
     kotlin("jvm") version "2.0.20"
     id("org.jetbrains.kotlinx.kover") version "0.7.6"
-    kotlin("plugin.serialization") version "2.0.20"
+    kotlin("plugin.serialization") version "2.0.21"
     `maven-publish`
     signing
     id("io.github.gradle-nexus.publish-plugin") version "2.0.0"