diff --git a/specification/network/resource-manager/readme.md b/specification/network/resource-manager/readme.md
index 70cd07fa805e..80eee45f3b9f 100644
--- a/specification/network/resource-manager/readme.md
+++ b/specification/network/resource-manager/readme.md
@@ -28,7 +28,38 @@ These are the global settings for the Network API.
 title: NetworkManagementClient
 description: Network Client
 openapi-type: arm
-tag: package-2018-02
+tag: package-2018-04
+```
+
+### Tag: package-2018-04
+
+These settings apply only when `--tag=package-2018-04` is specified on the command line.
+
+``` yaml $(tag) == 'package-2018-04'
+
+input-file:
+- Microsoft.Network/stable/2018-04-01/applicationGateway.json
+- Microsoft.Network/stable/2018-04-01/applicationSecurityGroup.json
+- Microsoft.Network/stable/2018-04-01/checkDnsAvailability.json
+- Microsoft.Network/stable/2018-04-01/ddosProtectionPlan.json
+- Microsoft.Network/stable/2018-04-01/endpointService.json
+- Microsoft.Network/stable/2018-04-01/expressRouteCircuit.json
+- Microsoft.Network/stable/2018-04-01/expressRouteCrossConnection.json
+- Microsoft.Network/stable/2018-04-01/loadBalancer.json
+- Microsoft.Network/stable/2018-04-01/network.json
+- Microsoft.Network/stable/2018-04-01/networkInterface.json
+- Microsoft.Network/stable/2018-04-01/networkSecurityGroup.json
+- Microsoft.Network/stable/2018-04-01/networkWatcher.json
+- Microsoft.Network/stable/2018-04-01/operation.json
+- Microsoft.Network/stable/2018-04-01/publicIpAddress.json
+- Microsoft.Network/stable/2018-04-01/routeFilter.json
+- Microsoft.Network/stable/2018-04-01/routeTable.json
+- Microsoft.Network/stable/2018-04-01/serviceCommunity.json
+- Microsoft.Network/stable/2018-04-01/usage.json
+- Microsoft.Network/stable/2018-04-01/virtualNetwork.json
+- Microsoft.Network/stable/2018-04-01/virtualNetworkGateway.json
+- Microsoft.Network/stable/2018-04-01/vmssNetworkInterface.json
+- Microsoft.Network/stable/2018-04-01/vmssPublicIpAddress.json
 ```
 
 ### Tag: package-2018-02