I've re-released the hibernate-jpa-2.1-api with a single, minor change: declare the official Jigsaw module name "java.persistence" in the Automatic-Module-Name header in the MANIFEST. This was mostly done on request of the WildFly team, there's no strong reason to upgrade any project, unless you want to experiment with Jigsaw of course.. FYI version 1.0.1.Final never existed; my bad, I misinterpreted the repository status. Reminder: for JPA 2.2 we'll be using the API bundle from the spec group as it's now finally being released in Maven central. So going forward it will be javax.persistence:javax.persistence-api. Thanks, Sanne