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: Axel Beckert <firstname.lastname@example.org>
Date: Sun Oct 24 06:45:45 2021 +0200
Update NEWS.markdown for 4.9.1 release
Has been forgotten in the release itself.