diff --git a/mytoyota/models/endpoints/notifications.py b/mytoyota/models/endpoints/notifications.py
index b540b95..ef3635a 100644
--- a/mytoyota/models/endpoints/notifications.py
+++ b/mytoyota/models/endpoints/notifications.py
@@ -43,7 +43,7 @@ class NotificationModel(BaseModel):
 
 
 class _PayloadItemModel(BaseModel):
-    vin: str
+    vin: str = None
     notifications: List[NotificationModel]