How to fix 'Couldn't load file or assembly System.Diagnostics.DiagnosticsSource with Microsoft.Azure.Servicebus'?

Trying to send message to Azure service bus I am getting the following stack trace. The WebAPI which is trying to put it into the queue is based on NancyFX

I have already tried to install this System.Diagnostics.DiagnosticSource to my project, but it didn't help.

Could not load file or assembly 'System.Diagnostics.DiagnosticSource, Version=4.0.2.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
System.IO.FileLoadException: Could not load file or assembly 'System.Diagnostics.DiagnosticSource, Version=4.0.2.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
File name: 'System.Diagnostics.DiagnosticSource, Version=4.0.2.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'
   at Microsoft.Azure.ServiceBus.Core.MessageSender.<SendAsync>d__39.MoveNext()
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)
   at Microsoft.Azure.ServiceBus.Core.MessageSender.SendAsync(IList`1 messageList)

Expectation: Works without an issue :P