diff --git a/app/build.gradle b/app/build.gradle
index 1250c4b..350c60d 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -65,7 +65,6 @@ dependencies {
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
 
     implementation 'com.journeyapps:zxing-android-embedded:4.1.0'
-    implementation 'androidx.appcompat:appcompat:1.3.0'
     implementation 'androidx.core:core:1.6.0'
 
 //    debugImplementation 'com.amitshekhar.android:debug-db:1.0.6'
diff --git a/build.gradle b/build.gradle
index 3675274..2d0aef0 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,7 +9,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.1'
+        classpath 'com.android.tools.build:gradle:4.2.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files