diff --git a/android/gradle.properties b/android/gradle.properties
index 9742e8d9ac872ece07c6ae62a041bc05c2a8fcc6..4878903faeac600353ec559be514de7d30376f55 100644
--- a/android/gradle.properties
+++ b/android/gradle.properties
@@ -1,5 +1,5 @@
 org.gradle.jvmargs=-Xmx1536M
 android.useAndroidX=true
 android.enableJetifier=true
-app.versionName=0.0.31
-app.versionCode=31
+app.versionName=0.0.32
+app.versionCode=32
diff --git a/lib/main.dart b/lib/main.dart
index a317c62a527f381023b7d4269324b197fdf9fde7..dd1afff2ab481d34fc88bd2e0751f294b17f42ed 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,10 +1,15 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:provider/provider.dart';
 
 import 'provider/data.dart';
 import 'screens/home.dart';
 
-void main() => runApp(MyApp());
+void main() {
+  WidgetsFlutterBinding.ensureInitialized();
+  SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp])
+      .then((value) => runApp(MyApp()));
+}
 
 class MyApp extends StatelessWidget {
   @override