Your requirements could not be resolved to an installable set of packages. Problem 1 - doctrine/phpcr-bundle is present at version dev-49918b30a8896b84a9d79dc506f33fdf21d70424 and cannot be modified by Composer - doctrine/phpcr-bundle dev-49918b30a8896b84a9d79dc506f33fdf21d70424 conflicts with doctrine/phpcr-odm 2.0.0-beta1. - Root composer.json requires doctrine/phpcr-odm ^2.0 -> satisfiable by doctrine/phpcr-odm[2.0.0-beta1].