Global configuration is defined in an assembly that is not refrenced

Hi,
I need to use the Signed version of the DLL, so I have followed the steps in this link http://hangfire.discourse.group/t/please-add-strong-names-to-hangfire-assemblies/339 to sign the dll manually.

Once after I signed and got the new dll, I get this exception “IGlobalConfiguration is defined in an assembly that is not referenced”. I have tried to fix this as given in the following link but that was not successful.

http://hangfire.discourse.group/t/iglobalconfiguration-is-not-defined-error-after-strong-naming-assembly/2291

Can you guys guide me how to fix this issue?