diff --git a/notebook/services/api/api.yaml b/notebook/services/api/api.yaml
index 56efce954..9024fbd55 100644
--- a/notebook/services/api/api.yaml
+++ b/notebook/services/api/api.yaml
@@ -789,7 +789,6 @@ definitions:
       - mimetype
       - format
       - content
-      - size
     properties:
       name:
         type: string