diff --git a/build.gradle.kts b/build.gradle.kts
index 8ad4f1a..d791b94 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -4,7 +4,7 @@ import org.jetbrains.kotlin.gradle.ExperimentalWasmDsl
 
 plugins {
     kotlin("multiplatform") version "2.3.20"
-    kotlin("plugin.serialization") version "2.3.20"
+    kotlin("plugin.serialization") version "2.3.21"
     id("com.vanniktech.maven.publish") version "0.36.0"
 }