diff --git a/FSharp.Data.GraphQL.Integration.sln b/FSharp.Data.GraphQL.Integration.sln
index 91f7990dd..4f4517c8d 100644
--- a/FSharp.Data.GraphQL.Integration.sln
+++ b/FSharp.Data.GraphQL.Integration.sln
@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.26124.0
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.33312.197
 MinimumVisualStudioVersion = 15.0.26124.0
 Project("{6EC3EE1D-3C4E-46DD-8F32-0CC8E7565705}") = "FSharp.Data.GraphQL.IntegrationTests", "tests\FSharp.Data.GraphQL.IntegrationTests\FSharp.Data.GraphQL.IntegrationTests.fsproj", "{09D910E6-94EF-46AF-94DF-10A9FEC837C0}"
 EndProject
@@ -14,6 +14,9 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{BDE03396-2ED6-4153-B94C-351BAB3F67BD}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{BA7F22E2-D411-4229-826B-F55FF171D12A}"
+	ProjectSection(SolutionItems) = preProject
+		build.fsx = build.fsx
+	EndProjectSection
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/FSharp.Data.GraphQL.sln b/FSharp.Data.GraphQL.sln
index b2907ee78..e7fda4139 100644
--- a/FSharp.Data.GraphQL.sln
+++ b/FSharp.Data.GraphQL.sln
@@ -141,6 +141,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		global.json = global.json
 		LICENSE.txt = LICENSE.txt
 		Packages.props = Packages.props
+		Prepare template project for packing.ps1 = Prepare template project for packing.ps1
 		README.md = README.md
 		RELEASE_NOTES.md = RELEASE_NOTES.md
 	EndProjectSection
diff --git a/build.fsx b/build.fsx
index 62f4b670c..633dc6134 100644
--- a/build.fsx
+++ b/build.fsx
@@ -1,3 +1,6 @@
+open System.Net.Http
+
+
 #r "nuget: Fake.Api.GitHub"
 #r "nuget: Fake.Core.ReleaseNotes"
 #r "nuget: Fake.Core.Target"
@@ -72,7 +75,7 @@ Target.create "Build" <| fun _ ->
             Configuration = DotNet.BuildConfiguration.Release
             MSBuildParams = { o.MSBuildParams with DisableInternalBinLog = true } })
 
-let startGraphQLServer (project : string) (streamRef : DataRef<Stream>) =
+let startGraphQLServer (project : string) port (streamRef : DataRef<Stream>) =
     DotNet.build
         (fun options ->
             { options with
@@ -90,7 +93,7 @@ let startGraphQLServer (project : string) (streamRef : DataRef<Stream>) =
         </> DotNetMoniker
         </> (projectName + ".dll")
 
-    CreateProcess.fromRawCommandLine "dotnet" $"{serverExe} --urls=http://localhost:8086/"
+    CreateProcess.fromRawCommandLine "dotnet" $"{serverExe} --urls=http://localhost:%i{port}/"
     |> CreateProcess.withStandardInput (CreatePipe streamRef)
     |> Proc.start
     |> ignore
@@ -123,7 +126,7 @@ Target.create "StartStarWarsServer" <| fun _ ->
         </> "star-wars-api"
         </> "FSharp.Data.GraphQL.Samples.StarWarsApi.fsproj"
 
-    startGraphQLServer project starWarsServerStream
+    startGraphQLServer project 8086 starWarsServerStream
 
 Target.createFinal "StopStarWarsServer" <| fun _ ->
     try
@@ -141,7 +144,7 @@ Target.create "StartIntegrationServer" <| fun _ ->
         </> "FSharp.Data.GraphQL.IntegrationTests.Server"
         </> "FSharp.Data.GraphQL.IntegrationTests.Server.fsproj"
 
-    startGraphQLServer project integrationServerStream
+    startGraphQLServer project 8085 integrationServerStream
 
 Target.createFinal "StopIntegrationServer" <| fun _ ->
     try
@@ -149,6 +152,15 @@ Target.createFinal "StopIntegrationServer" <| fun _ ->
     with e ->
         printfn "%s" e.Message
 
+Target.create "UpdateIntrospectionFile" <| fun _ ->
+    let client = new HttpClient ()
+    let result = client.GetAsync("http://localhost:8086").Result
+    let file = new FileStream("tests/FSharp.Data.GraphQL.IntegrationTests/introspection.json", FileMode.Create, FileAccess.Write, FileShare.None)
+    result.Content.CopyTo(file, null, System.Threading.CancellationToken.None)
+    file.Close()
+    result.Dispose()
+    client.Dispose()
+
 Target.create "RunUnitTests" <| fun _ ->
     runTests "tests/FSharp.Data.GraphQL.Tests/FSharp.Data.GraphQL.Tests.fsproj"
 
@@ -249,6 +261,7 @@ Target.create "PackAll" ignore
     ==> "RunUnitTests"
     ==> "StartStarWarsServer"
     ==> "StartIntegrationServer"
+    ==> "UpdateIntrospectionFile"
     ==> "RunIntegrationTests"
     ==> "All"
     =?> ("GenerateDocs", Environment.environVar "APPVEYOR" = "True")
diff --git a/tests/FSharp.Data.GraphQL.IntegrationTests.Server/Program.fs b/tests/FSharp.Data.GraphQL.IntegrationTests.Server/Program.fs
index 979d32584..857bbf959 100644
--- a/tests/FSharp.Data.GraphQL.IntegrationTests.Server/Program.fs
+++ b/tests/FSharp.Data.GraphQL.IntegrationTests.Server/Program.fs
@@ -1,4 +1,4 @@
-namespace FSharp.Data.GraphQL.IntegrationTests.Server
+namespace FSharp.Data.GraphQL.IntegrationTests.Server
 
 open Microsoft.AspNetCore
 open Microsoft.AspNetCore.Hosting
@@ -6,13 +6,10 @@ open Microsoft.AspNetCore.Hosting
 module Program =
     let exitCode = 0
 
-    let [<Literal>] BaseAddress = "localhost:8085"
-
     let buildWebHost args =
         WebHost
             .CreateDefaultBuilder(args)
             .UseStartup<Startup>()
-            .UseUrls(sprintf "http://%s" BaseAddress)
 
     [<EntryPoint>]
     let main args =