diff --git a/java/build.gradle b/java/build.gradle
index 6d08f1c..5f44ff5 100644
--- a/java/build.gradle
+++ b/java/build.gradle
@@ -11,7 +11,7 @@
 //}
 
 buildscript {
-    ext.kotlin_version = '1.4.21-2'
+    ext.kotlin_version = '1.4.30'
 }
 
 plugins {