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: Matthias Klose <email@example.com>
Date: Mon Mar 25 11:48:27 2019 +0100
- remove again the gnat-9-sjlj-x86-64-linux-gnu package