diff --git a/app/build.gradle b/app/build.gradle
index e01277d14..80fb796e6 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -134,6 +134,7 @@ android {
         // release builds before.
         all {
             minifyEnabled true
+            useProguard true
             shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
             testProguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro', 'src/androidTest/proguard-rules.pro'
diff --git a/build.gradle b/build.gradle
index abc82a738..cf0c82b7d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,7 +3,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.5.0'
+        classpath 'com.android.tools.build:gradle:2.0.0'
         classpath files('libs/gradle-witness.jar')
     }
 }