diff --git a/specification/containerservice/resource-manager/Microsoft.ContainerService/preview/2022-01-02-preview/managedClusters.json b/specification/containerservice/resource-manager/Microsoft.ContainerService/preview/2022-01-02-preview/managedClusters.json
index c0ba8e79673b..318f6efccde2 100644
--- a/specification/containerservice/resource-manager/Microsoft.ContainerService/preview/2022-01-02-preview/managedClusters.json
+++ b/specification/containerservice/resource-manager/Microsoft.ContainerService/preview/2022-01-02-preview/managedClusters.json
@@ -3027,7 +3027,8 @@
           "type": "string",
           "enum": [
             "azure",
-            "kubenet"
+            "kubenet",
+            "none"
           ],
           "default": "kubenet",
           "x-ms-enum": {
@@ -3041,6 +3042,10 @@
               {
                 "value": "kubenet",
                 "description": "Use the Kubenet network plugin. See [Kubenet (basic) networking](https://docs.microsoft.com/azure/aks/concepts-network#kubenet-basic-networking) for more information."
+              },
+              {
+                "value": "none",
+                "description": "Do not use a network plugin. A custom CNI will need to be installed after cluster creation for networking functionality."
               }
             ]
           },