diff --git a/specification/vmware/resource-manager/Microsoft.AVS/stable/2020-03-20/vmware.json b/specification/vmware/resource-manager/Microsoft.AVS/stable/2020-03-20/vmware.json
index 44af58dd48d8..f968128343d7 100644
--- a/specification/vmware/resource-manager/Microsoft.AVS/stable/2020-03-20/vmware.json
+++ b/specification/vmware/resource-manager/Microsoft.AVS/stable/2020-03-20/vmware.json
@@ -1965,7 +1965,8 @@
         "nsxtPassword": {
           "description": "NSX-T Manager password",
           "type": "string",
-          "readOnly": true
+          "readOnly": true,
+          "x-ms-secret": true
         },
         "vcenterUsername": {
           "description": "vCenter admin username",
@@ -1975,7 +1976,8 @@
         "vcenterPassword": {
           "description": "vCenter admin password",
           "type": "string",
-          "readOnly": true
+          "readOnly": true,
+          "x-ms-secret": true
         }
       }
     },