Bump versionCode for app build.
diff --git a/app/build.gradle b/app/build.gradle
index 2b6723f..848b1f0 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,7 +18,7 @@
 		minSdkVersion 16
 		targetSdkVersion 25
 		versionName '1.13.0'
-		versionCode 20
+		versionCode 30
 	}
 
 	splits {