diff --git a/settings.gradle.kts b/settings.gradle.kts
index bdab7025..736e3135 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -11,7 +11,7 @@ pluginManagement {
 
     plugins {
         kotlin("multiplatform") version "1.9.22"
-        kotlin("plugin.serialization") version "1.9.22"
+        kotlin("plugin.serialization") version "2.1.21"
     }
 }