diff --git a/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/preview/2020-05-01-preview/machineLearningServices.json b/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/preview/2020-05-01-preview/machineLearningServices.json
index 649f2d97df37..9286cf8eede1 100644
--- a/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/preview/2020-05-01-preview/machineLearningServices.json
+++ b/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/preview/2020-05-01-preview/machineLearningServices.json
@@ -2447,7 +2447,9 @@
           "description": "The identity type.",
           "enum": [
             "SystemAssigned",
-            "SystemAssigned,UserAssigned"
+            "SystemAssigned,UserAssigned",
+            "UserAssigned",
+            "None"
           ],
           "x-ms-enum": {
             "name": "ResourceIdentityType",