diff --git a/build.gradle b/build.gradle
index dcf3ca2..72a2480 100644
--- a/build.gradle
+++ b/build.gradle
@@ -68,6 +68,13 @@ android {
     }
   }
 
+  // Name outputs after the application ID.
+  android.applicationVariants.all { variant ->
+    variant.outputs.all {
+      outputFileName = "${applicationId}.apk"
+    }
+  }
+
   compileOptions {
     sourceCompatibility JavaVersion.VERSION_1_7
     targetCompatibility JavaVersion.VERSION_1_7