diff --git a/specification/storage/data-plane/Microsoft.BlobStorage/preview/2020-12-06/blob.json b/specification/storage/data-plane/Microsoft.BlobStorage/preview/2020-12-06/blob.json
index 331c5b15c338..53a5b7c0137e 100644
--- a/specification/storage/data-plane/Microsoft.BlobStorage/preview/2020-12-06/blob.json
+++ b/specification/storage/data-plane/Microsoft.BlobStorage/preview/2020-12-06/blob.json
@@ -6063,6 +6063,9 @@
           },
           {
             "$ref": "#/parameters/CopySourceAuthorization"
+          },
+          {
+            "$ref": "#/parameters/EncryptionScope"
           }
         ],
         "responses": {