diff --git a/build.gradle b/build.gradle
index d80ae5e..3c1959a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'org.jetbrains.kotlin.jvm' version '1.6.21'
-    id 'org.jetbrains.kotlin.plugin.serialization' version '1.6.21'
+    id 'org.jetbrains.kotlin.plugin.serialization' version '1.9.20'
     id 'com.github.johnrengelman.shadow' version '7.1.2'
     id 'application'
 }