diff --git a/build.gradle.kts b/build.gradle.kts
index bf2138f..9a4009b 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -3,7 +3,7 @@ import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 
 plugins {
     // Apply the Kotlin JVM plugin to add support for Kotlin.
-    id("org.jetbrains.kotlin.jvm") version "1.5.31"
+    id("org.jetbrains.kotlin.jvm") version "1.9.21"
     // Kotlinx serialization for any data format
     kotlin("plugin.serialization") version "1.5.31"
     // Shade the plugin