How do I set the version of mvn to use with m2eclipse?

I'm trying to use Eclipse on an existing project where I use Maven 3.0.3. I installed m2eclipse, but it appears to be trying to build with an old ve开发者_如何学Gorsion of maven.

Go to Windows -> preferences -> Maven -> Installations and you can choose which Maven installation to use

Go to Windows -> Preferences -> Maven -> Installations and add your external Maven installation to the list.