UniverSIS https://www.universis.gr is an open-source student information system actively developed for serving the Greek Higher Ed Institutions. We recently took the initiative to implementing the OneRoster specification in the UniverSIS API allowing exchange of data between any SIS and any Moodle OneRoster installation. This allows for course, class, instructor and student information to be synced. We will be presenting the capabilities of the synchronization process and the prospective gains from usage at the Aristotle University of Thessaloniki.