diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/networkInterface.json b/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/networkInterface.json
index 09fbd56a7d91..fe0847df370a 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/networkInterface.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/networkInterface.json
@@ -942,6 +942,13 @@
           },
           "description": "A list of IPConfigurations of the network interface."
         },
+        "tapConfigurations": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/NetworkInterfaceTapConfiguration"
+          },
+          "description": "A list of TapConfigurations of the network interface."
+        },
         "dnsSettings": {
           "$ref": "#/definitions/NetworkInterfaceDnsSettings",
           "description": "The DNS settings in network interface."