Update build.gradle

build.gradle

@@ -3,9 +3,11 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
+
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
+        classpath 'com.android.tools.build:gradle:3.1.3'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,6 +17,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }