diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2018-10-01/networkWatcher.json b/specification/network/resource-manager/Microsoft.Network/stable/2018-10-01/networkWatcher.json
index 61f1f7763ecd..554383f58873 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2018-10-01/networkWatcher.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2018-10-01/networkWatcher.json
@@ -2669,7 +2669,11 @@
         },
         "workspaceResourceId": {
           "description": "Resource Id of the attached workspace ",
-         "type": "string"
+          "type": "string"
+        },
+        "trafficAnalyticsInterval": {
+          "description": "The interval in minutes which would decide how frequently TA service should do flow analytics",
+          "type": "integer"
         }
       }
     },