diff --git a/WireMock-as-a-standalone-process.md b/WireMock-as-a-standalone-process.md
index 506c819..1c8240c 100644
--- a/WireMock-as-a-standalone-process.md
+++ b/WireMock-as-a-standalone-process.md
@@ -6,7 +6,7 @@ Note that when using WireMock in a **NET 4.5x**, **NET 4.6.x** project, you can
 
 > Unhandled Exception: System.Exception: Service start failed with error: The server factory could not be located for > the given input: Microsoft.Owin.Host.HttpListener ---> System.MissingMemberException: The server factory could not be located for the given input: Microsoft.Owin.Host.HttpListener
 
-The solution is to add the `Microsoft.Owin.Host.HttpListener` NuGet package to your hosting console application.
+The solution is to add the `Microsoft.Owin.Host.HttpListener` (version **4.0.0**) NuGet package to your hosting console application.
 
 ### Option 1 : using the WireMock.Net.StandAlone library.
 (https://www.nuget.org/packages/WireMock.Net.StandAlone/)