diff --git a/kotlin_demo/build.gradle b/kotlin_demo/build.gradle
index b8d16671a..b7b7c9005 100644
--- a/kotlin_demo/build.gradle
+++ b/kotlin_demo/build.gradle
@@ -3,7 +3,7 @@
 plugins {
   id 'java'
   id 'org.jetbrains.intellij' version '0.6.5'
-  id 'org.jetbrains.kotlin.jvm' version '1.3.60'
+  id 'org.jetbrains.kotlin.jvm' version '1.4.21-2'
 }
 
 group 'org.intellij.sdk'