Migrating from .NET 3.5 to 4.5.1 in Visual Studio 2013

I'm currently in the process of trying to migrate a project from .NET 3.5 to 4.5.1 using Visual Studio 2013. Every piece of documentation I've been able to find says that when you open a project with an outdated framework a wizard will pop up offering to migrate your project, however I have been unable to get that wizard. The obvious thing would be to manually change the target framework, however we have quite a large multi-solution project so this would not be ideal. Is there a way to explicitly invoke this tool? edit for more info: This is the wizard I was referring to: http://msdn.microsoft.com/en-us/library/dd483478.aspx It does not just switch the target framework, it also updates references in the Web.config as well. Like I said, this is a very large project and I have no interest in doing this manually. I end up getting a lot (A LOT) of missing references when I try to do this manually.