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It's been a while since I last did that, but from the top of my head: It depends on your project's dependencies and your module structure. If you have locally-built artifacts, you'll need to migrate them to your maven repo. There might be some scripts for that, but if there aren't too many of those, it's probably simpler to do that by hand. Other than that, if you don't have many modules, it might be easiest just to create a new Maven project, copy your existing sources to that one and add needed dependencies until things start working. With multiple modules per project, I think you'll just need to start with a leaf module and work yourself through the structure.