Updating all of the pom.xml Version Numbers in a Multi-Module Maven Project

To update the versions of all of the poms in a multiple module project use the versions-maven plugin.

To update

mvn versions:set -DnewVersion=1.4.0-SNAPSHOT

Will modify all of the versions of each of the poms to the version specified.  It will create a pom.xml.versionsBackup for each pom file that it modified.  You can then examine each to make sure that it is as you intended.

If you want, you can revert your change with

mvn versions:revert

If you are satisfied with the change, you can commit the change with

mvn versions:commit