diff --git a/build.gradle.kts b/build.gradle.kts
index c7692df7..86a1af9a 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -3,7 +3,7 @@ import org.gradle.api.tasks.testing.logging.TestLogEvent
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-    kotlin("jvm") version "1.8.0" apply false
+    kotlin("jvm") version "1.9.20" apply false
     id("com.google.protobuf") version "0.9.4" apply false
     id("org.gradle.test-retry") version "1.5.6"
     id("io.github.gradle-nexus.publish-plugin") version "1.3.0"