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: Jeremy Bicha <email@example.com>
Date: Thu Jan 3 11:57:24 2019 -0500
Have libatk1.0-doc suggest GTK3 docs instead of GTK2