this package seems to have new commits in its VCS but has
not yet updated debian/changelog. You should consider updating
the Debian changelog and uploading this new version into the archive.
Here are the relevant commit logs:
Author: Petter Reinholdtsen <email@example.com>
Date: Sun Oct 7 06:08:33 2018 +0000
Added d/gbp.conf file to enforce the use of pristine-tar.