diff --git a/specification/compute/resource-manager/Microsoft.Compute/stable/2021-11-01/compute.json b/specification/compute/resource-manager/Microsoft.Compute/stable/2021-11-01/compute.json
index acaa570c5b3c..6e95981a4386 100644
--- a/specification/compute/resource-manager/Microsoft.Compute/stable/2021-11-01/compute.json
+++ b/specification/compute/resource-manager/Microsoft.Compute/stable/2021-11-01/compute.json
@@ -3513,6 +3513,13 @@
             "type": "string",
             "description": "The name of the resource group."
           },
+          {
+            "name": "$filter",
+            "in": "query",
+            "required": false,
+            "type": "string",
+            "description": "The system query option to filter VMs returned in the response. Allowed value is 'virtualMachineScaleSet/id' eq /subscriptions/{subId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmssName}'"
+          },
           {
             "$ref": "#/parameters/ApiVersionParameter"
           },
@@ -3541,6 +3548,13 @@
         "operationId": "VirtualMachines_ListAll",
         "description": "Lists all of the virtual machines in the specified subscription. Use the nextLink property in the response to get the next page of virtual machines.",
         "parameters": [
+          {
+            "name": "$filter",
+            "in": "query",
+            "required": false,
+            "type": "string",
+            "description": "The system query option to filter VMs returned in the response. Allowed value is 'virtualMachineScaleSet/id' eq /subscriptions/{subId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmssName}'"
+          },
           {
             "$ref": "#/parameters/ApiVersionParameter"
           },
@@ -11434,7 +11448,7 @@
           }
         }
       },
-      "description": "Describes the public IP Sku"
+      "description": "Describes the public IP Sku. It can only be set with OrchestrationMode as Flexible."
     },
     "VirtualMachinePublicIPAddressConfiguration": {
       "properties": {