diff --git a/lib/core/sync/background_sync.dart b/lib/core/sync/background_sync.dart
index 1c7ce0a..d4c8304 100644
--- a/lib/core/sync/background_sync.dart
+++ b/lib/core/sync/background_sync.dart
@@ -38,7 +38,7 @@ Future<void> registerBackgroundSync() async {
     _kTaskName,
     frequency: const Duration(minutes: 15),
     constraints: Constraints(networkType: NetworkType.connected),
-    existingWorkPolicy: ExistingWorkPolicy.keep,
+    existingWorkPolicy: ExistingPeriodicWorkPolicy.keep,
   );
 }
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 00a178c..77b514b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -47,7 +47,7 @@ dependencies:
 
   # Background sync and local notifications
   flutter_local_notifications: ^18.0.1
-  workmanager: ^0.5.2
+  workmanager: ^0.9.0
 
 dev_dependencies:
   flutter_test: