diff --git a/docs/controllers/NotificationController.yaml b/docs/controllers/NotificationController.yaml
index 9caf31c9f..f4972e14f 100644
--- a/docs/controllers/NotificationController.yaml
+++ b/docs/controllers/NotificationController.yaml
@@ -74,7 +74,11 @@ paths:
               type: object
               properties:
                 libraryId:
-                  $ref: '../objects/Library.yaml#/components/schemas/libraryId'
+                  type: string
+                  description: The ID of the library for the notification. Applies to all libraries if `null`.
+                  nullable: true
+                  format: uuid
+                  example: 'e4bb1afb-4a4f-4dd6-8be0-e615d233185b'
                 eventName:
                   $ref: '../objects/Notification.yaml#/components/schemas/notificationEventName'
                 urls:
diff --git a/docs/objects/Notification.yaml b/docs/objects/Notification.yaml
index 4837a6ec4..e016aca95 100644
--- a/docs/objects/Notification.yaml
+++ b/docs/objects/Notification.yaml
@@ -44,6 +44,7 @@ components:
     notificationType:
       type: string
       enum: ['info', 'success', 'warning', 'failure']
+      nullable: true
       default: 'info'
       description: The notification's type.
     Notification: