diff --git a/build.gradle.kts b/build.gradle.kts
index 44824a2..9edbbea 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -3,7 +3,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
     kotlin("jvm") version "1.9.21"
-    id("org.jetbrains.kotlin.plugin.serialization") version "1.9.20"
+    id("org.jetbrains.kotlin.plugin.serialization") version "1.9.21"
     id("org.cqfn.diktat.diktat-gradle-plugin") version "1.2.5"
     `maven-publish`
 }