diff --git a/android/build.gradle b/android/build.gradle
index c077012..3461ce0 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -2,7 +2,7 @@ group 'com.example.flutter_nano_ffi'
 version '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '1.4.31'
+    ext.kotlin_version = '1.6.21'
     repositories {
         google()
         jcenter()