Abstract: A server determines dependencies of packages in a plurality of repositories. An algorithm calculates a set of compatible versions for the dependencies of the packages, subject to a constraint that no side-by-side versions shall be introduced. A new branch in a repository of the plurality of repositories is created. The package manifests of the new branch are updated based on the set of compatible versions. The files that reference the package manifest in the new branch are updated. The new branch is validated based on the updated files. The server publishes a new version of an updated package in the repository in response to the validation being successful, or automatically determines which parties to notify in response to the validation being unsuccessful.