diff --git a/build.gradle.kts b/build.gradle.kts
index 71a7be0..59126f4 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -2,7 +2,7 @@ val taskGroupName = "surfer"
 
 plugins {
     kotlin("jvm") version "2.0.21"
-    kotlin("plugin.serialization") version "2.0.21"
+    kotlin("plugin.serialization") version "2.1.20"
     application
     id("com.github.johnrengelman.shadow") version "8.1.1"
     idea