Target SDK 30

app/build.gradle

@@ -30,6 +30,6 @@ android {
 dependencies {
     implementation 'androidx.legacy:legacy-support-core-ui:1.0.0'
     implementation 'com.google.android.material:material:1.0.0'
+    implementation 'junit:junit:4.12'
     compileOnly 'androidx.annotation:annotation:1.0.0'
-    compileOnly 'junit:junit:4.12'
 }

build.gradle

@@ -4,7 +4,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-    classpath 'com.android.tools.build:gradle:3.1.3'
+        classpath 'com.android.tools.build:gradle:3.1.3'
     }
 }
 allprojects {
@@ -14,7 +14,7 @@ allprojects {
     }
 }
 ext {
-    compileSdkVersion = 29
-    targetSdkVersion = 29
+    compileSdkVersion = 30
+    targetSdkVersion = 30
     minSdkVersion = 15
 }