diff --git a/astrosmash/build.gradle b/astrosmash/build.gradle
index c5465c7..340b361 100644
--- a/astrosmash/build.gradle
+++ b/astrosmash/build.gradle
@@ -10,10 +10,20 @@ android {
         targetSdkVersion 16
     }
 
+    signingConfigs {
+        release {
+            storeFile file(RELEASE_STORE_FILE)
+            storePassword RELEASE_STORE_PASSWORD
+            keyAlias RELEASE_KEY_ALIAS
+            keyPassword RELEASE_KEY_PASSWORD
+        }
+    }
+
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+            signingConfig signingConfigs.release
         }
     }
 }