diff --git a/app/build.gradle b/app/build.gradle
index fb5433e..11d86ea 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,10 +1,8 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
-    buildToolsVersion "30.0.2"
 
     defaultConfig {
         applicationId "com.google.android.gms"
diff --git a/build.gradle b/build.gradle
index 7bbbd88..e146e87 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.4.20'
+    ext.kotlin_version = '1.4.21'
     repositories {
         google()
         jcenter()