diff --git a/android/app/build.gradle b/android/app/build.gradle
index 832f7cf..a751e7b 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -25,7 +25,7 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 def keystoreProperties = new Properties()
-def keystorePropertiesFile = rootProject.file('dev-key.properties')
+def keystorePropertiesFile = rootProject.file('key.properties')
 if (keystorePropertiesFile.exists()) {
     keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
 }
@@ -38,7 +38,7 @@ android {
     compileSdkVersion 34
 
     defaultConfig {
-        minSdkVersion 21
+        minSdkVersion 23
         targetSdkVersion 34
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
diff --git a/lib/firebase_options_prod.dart b/lib/firebase_options_prod.dart
new file mode 100644
index 0000000..af0ce3f
--- /dev/null
+++ b/lib/firebase_options_prod.dart
@@ -0,0 +1,73 @@
+// File generated by FlutterFire CLI.
+// ignore_for_file: type=lint
+import 'package:firebase_core/firebase_core.dart' show FirebaseOptions;
+import 'package:flutter/foundation.dart'
+    show defaultTargetPlatform, kIsWeb, TargetPlatform;
+
+/// Default [FirebaseOptions] for use with your Firebase apps.
+///
+/// Example:
+/// ```dart
+/// import 'firebase_options.dart';
+/// // ...
+/// await Firebase.initializeApp(
+///   options: DefaultFirebaseOptions.currentPlatform,
+/// );
+/// ```
+class DefaultFirebaseOptions {
+  static FirebaseOptions get currentPlatform {
+    if (kIsWeb) {
+      throw UnsupportedError(
+        'DefaultFirebaseOptions have not been configured for web - '
+        'you can reconfigure this by running the FlutterFire CLI again.',
+      );
+    }
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.android:
+        return android;
+      case TargetPlatform.iOS:
+        return ios;
+      case TargetPlatform.macOS:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for macos - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      case TargetPlatform.windows:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for windows - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      case TargetPlatform.linux:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for linux - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      default:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions are not supported for this platform.',
+        );
+    }
+  }
+
+  static const FirebaseOptions android = FirebaseOptions(
+    apiKey: 'AIzaSyBTlInlUcXZ-1RBVl80BKbwW8XHoa5Pyk0',
+    appId: '1:168368749206:android:dfc0b00fead4b6c65e60b7',
+    messagingSenderId: '168368749206',
+    projectId: 'fcs-prod1',
+    databaseURL: 'https://fcs-prod1.firebaseio.com',
+    storageBucket: 'fcs-prod1.appspot.com',
+  );
+
+  static const FirebaseOptions ios = FirebaseOptions(
+    apiKey: 'AIzaSyAHxmbWdMXoju1fOiypG6_y_naIPdYL5Nw',
+    appId: '1:168368749206:ios:58ff01cdd87cba895e60b7',
+    messagingSenderId: '168368749206',
+    projectId: 'fcs-prod1',
+    databaseURL: 'https://fcs-prod1.firebaseio.com',
+    storageBucket: 'fcs-prod1.appspot.com',
+    androidClientId: '168368749206-1sks7q10k2rnor8rdkc77ddmq4k18a0s.apps.googleusercontent.com',
+    iosClientId: '168368749206-5qjmae2tmnqjjb7ch74ug7u2teftligs.apps.googleusercontent.com',
+    iosBundleId: 'com.mokkon.fcs',
+  );
+
+}
\ No newline at end of file
diff --git a/lib/main-prod.dart b/lib/main-prod.dart
index 9b67e7c..05c5286 100644
--- a/lib/main-prod.dart
+++ b/lib/main-prod.dart
@@ -1,4 +1,5 @@
 import 'package:fcs/data/provider/messaging_fcm.dart';
+import 'package:fcs/firebase_options.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/material.dart';
@@ -9,7 +10,9 @@ import 'config.dart';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  await Firebase.initializeApp();
+  await Firebase.initializeApp(
+    options: DefaultFirebaseOptions.currentPlatform,
+  );
   FirebaseMessaging.onBackgroundMessage(backgroundMessageHandler);
 
   Config(