diff --git a/specification/monitor/resource-manager/Microsoft.Monitor/stable/2023-04-03/monitoringAccounts_API.json b/specification/monitor/resource-manager/Microsoft.Monitor/stable/2023-04-03/monitoringAccounts_API.json
index 34714889e771..102a35c46b6d 100644
--- a/specification/monitor/resource-manager/Microsoft.Monitor/stable/2023-04-03/monitoringAccounts_API.json
+++ b/specification/monitor/resource-manager/Microsoft.Monitor/stable/2023-04-03/monitoringAccounts_API.json
@@ -470,13 +470,14 @@
             "Disabled"
           ],
           "type": "string",
-          "readOnly": true,
           "x-ms-enum": {
             "name": "PublicNetworkAccess",
             "modelAsString": true
           },
           "x-ms-mutability": [
-            "read"
+            "create",
+            "read",
+            "update"
           ]
         }
       }