diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2018-05-01/virtualNetworkGateway.json b/specification/network/resource-manager/Microsoft.Network/stable/2018-05-01/virtualNetworkGateway.json
index d202ef722691..8a1896cdaa7a 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2018-05-01/virtualNetworkGateway.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2018-05-01/virtualNetworkGateway.json
@@ -1649,7 +1649,13 @@
             "UltraPerformance",
             "VpnGw1",
             "VpnGw2",
-            "VpnGw3"
+            "VpnGw3",
+            "VpnGw1AZ",
+            "VpnGw2AZ",
+            "VpnGw3AZ",
+            "ErGw1AZ",
+            "ErGw2AZ",
+            "ErGw3AZ"
           ],
           "x-ms-enum": {
             "name": "VirtualNetworkGatewaySkuName",
@@ -1666,7 +1672,13 @@
             "UltraPerformance",
             "VpnGw1",
             "VpnGw2",
-            "VpnGw3"
+            "VpnGw3",
+            "VpnGw1AZ",
+            "VpnGw2AZ",
+            "VpnGw3AZ",
+            "ErGw1AZ",
+            "ErGw2AZ",
+            "ErGw3AZ"
           ],
           "x-ms-enum": {
             "name": "VirtualNetworkGatewaySkuTier",