WebAPI to serve static files issue: Microsoft.AspNetWebApi incompatible with Microsoft.Owin.StaticFiles package

I have a Self Hosting webApi that I need to add functionality to serve static html files. So I followed this example, but installation of Microsoft.Owin.Static files makes the App Server unable to start

Could not load file or assembly 'Microsoft.Owin, Version=2.0.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) 
   at Microsoft.Owin.Hosting.Builder.AppBuilderFactory.Create()
   at Microsoft.Owin.Hosting.Engine.HostingEngine.InitializeBuilder(StartContext context)
   at Microsoft.Owin.Hosting.Engine.HostingEngine.Start(StartContext context)
   at Microsoft.Owin.Hosting.Starter.HostingStarter.Start(StartOptions options)
   at WorkflowService.WorkflowService.OnStart(String[] args)

I found incompatibility where Microsoft.AspNetWebApi v5.2.7 nuget package only tolerates Microsoft.Owin v2.0.2 and I've tried downgrading, to 5.2.3 before achieving this error. I would appreciate any suggestions on hosting a html file(or app with js and css) on the same origin as the Owin hosted webApi.