diff --git a/lib/service/notification_service.dart b/lib/service/notification_service.dart
index daff249..7eca521 100644
--- a/lib/service/notification_service.dart
+++ b/lib/service/notification_service.dart
@@ -21,8 +21,8 @@ class NotificationService {
         AndroidInitializationSettings('@mipmap/ic_launcher');
 
     // ios initialization
-    const IOSInitializationSettings initializationSettingsIOS =
-        IOSInitializationSettings(
+    const DarwinInitializationSettings initializationSettingsIOS =
+        DarwinInitializationSettings(
       requestAlertPermission: false,
       requestBadgePermission: false,
       requestSoundPermission: false,
@@ -33,7 +33,9 @@ class NotificationService {
             android: initializationSettingsAndroid,
             iOS: initializationSettingsIOS);
     // the initialization settings are initialized after they are setted
-    await flutterLocalNotificationsPlugin.initialize(initializationSettings);
+    bool? initialized = await flutterLocalNotificationsPlugin
+        .initialize(initializationSettings);
+    print(initialized);
   }
 
   Future<void> setAllNotifications() async {
@@ -63,7 +65,7 @@ class NotificationService {
             importance: Importance.max,
             priority: Priority.max),
         // iOS details
-        iOS: IOSNotificationDetails(
+        iOS: DarwinNotificationDetails(
           sound: 'default.wav',
           presentAlert: true,
           presentBadge: true,
diff --git a/pubspec.lock b/pubspec.lock
index 06d9416..b488967 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -412,7 +412,7 @@ packages:
       name: timezone
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.8.0"
+    version: "0.9.1"
   typed_data:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index 656fddc..8239b72 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -35,7 +35,7 @@ dependencies:
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.2
-  timezone: ^0.8.0
+  timezone: ^0.9.0
   shared_preferences: ^2.0.17
   audioplayers: ^3.0.1
   mobile_scanner: ^3.0.0