Upgrade a reference dll in a C# project without recompiling the project

I need to take a built version of an C# application and change one of the reference dll's. What is the best way to do this, I have specific version turned off on the reference dll but as soon as I test replacing the dll with a newer version, I get the "Could not load file or assembly XXXXX, Version=XXXXX. Is there a way to stop the loader from caring about the version of the dll so the dll will just attempt to load?