diff --git a/lib/services/notifications/leantime-adapter.ts b/lib/services/notifications/leantime-adapter.ts
index 72139e8a..e9b3fafc 100644
--- a/lib/services/notifications/leantime-adapter.ts
+++ b/lib/services/notifications/leantime-adapter.ts
@@ -505,7 +505,7 @@ export class LeantimeAdapter implements NotificationAdapter {
       
       // Process notifications in batches
       const notificationIds = unreadNotifications
-        .map(n => {
+        .map((n: { id: number | string; sourceId: string }) => {
           const id = typeof n.id === 'number' ? n.id : parseInt(String(n.id || n.sourceId));
           return isNaN(id) ? null : id;
         })