diff --git a/app/notify_client/service_api_client.py b/app/notify_client/service_api_client.py
index 7fa74f5b8..6cc7b5567 100644
--- a/app/notify_client/service_api_client.py
+++ b/app/notify_client/service_api_client.py
@@ -104,6 +104,7 @@ class ServiceAPIClient(NotifyAdminAPIClient):
             'go_live_user',
             'go_live_at',
             'rate_limit',
+            'notes'
         }
         if disallowed_attributes:
             raise TypeError('Not allowed to update service attributes: {}'.format(