I am looking for instructions on how to upgrade the groovy version used within a grails installation. I cannot seem to find a way to do so and the documentation does not cover this set of instructions. I have looked at a number of files that contain the groovy-all reference but changing any of them has still resulted in the original groovy-all dependencies being pulled down. It should be far simpler but the GRAILS project seems to be awash in hard coded and duplicate entries.

Any details on how to do this would be appreciated.