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: Hideki Yamane <email@example.com>
Date: Sat Nov 21 01:06:34 2020 +0900
Set Standards-Version: 4.5.1 with no changes