diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index b2ca96f9..81a445ef 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -9,23 +9,23 @@
     <uses-permission android:name="android.permission.SEND_SMS" />
     <!-- Resolve phone numbers to contact names: -->
     <uses-permission android:name="android.permission.READ_CONTACTS"/>
-	<uses-permission android:name="android.permission.CAMERA" />
-	<uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
-	<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
-	<uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.TRANSMIT_IR" />
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 
-	<!-- Some of the used permissions imply uses-feature, so we need to make it optional.
-		 See http://developer.android.com/guide/topics/manifest/uses-feature-element.html#permissions -->
-	<uses-feature android:name="android.hardware.camera" android:required="false" />
-	<uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />
-	<uses-feature android:name="android.hardware.location" android:required="false" />
-	<uses-feature android:name="android.hardware.location.gps" android:required="false" />
+    <!-- Some of the used permissions imply uses-feature, so we need to make it optional.
+         See http://developer.android.com/guide/topics/manifest/uses-feature-element.html#permissions -->
+    <uses-feature android:name="android.hardware.camera" android:required="false" />
+    <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />
+    <uses-feature android:name="android.hardware.location" android:required="false" />
+    <uses-feature android:name="android.hardware.location.gps" android:required="false" />
     <uses-feature android:name="android.hardware.location.network" android:required="false" />
     <uses-feature android:name="android.hardware.microphone" android:required="false" />
-	<uses-feature android:name="android.hardware.telephony" android:required="false" />
+    <uses-feature android:name="android.hardware.telephony" android:required="false" />
     <uses-feature android:name="android.hardware.wifi" android:required="false" />
 
     <!-- This permission is not used, but a permission is needed on the sharedfiles contentprovider,
diff --git a/build.gradle b/build.gradle
index aa141380..bbe9eb20 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.2'
+        classpath 'com.android.tools.build:gradle:2.1.3'
     }
 }