diff --git a/build.gradle.kts b/build.gradle.kts
index 8541b9db..28235536 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -3,7 +3,7 @@ import org.gradle.internal.os.OperatingSystem
 
 plugins {
     kotlin("jvm") version "2.3.21"
-    kotlin("plugin.serialization") version "2.1.20"
+    kotlin("plugin.serialization") version "2.3.21"
     id("org.jetbrains.kotlinx.atomicfu") version "0.27.0"
     application
 }