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: Debian Janitor <email@example.com>
Date: Mon May 31 02:39:18 2021 +0000
Remove constraints unnecessary since stretch
* Build-Depends: Drop versioned constraint on debhelper.