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 <firstname.lastname@example.org>
Date: Sat Sep 11 11:29:52 2021 +0000
Update watch file format version to 4.
Fixes: lintian: older-debian-watch-file-standard
Author: TANIGUCHI Takaki <email@example.com>
Date: Sat Sep 11 20:06:00 2021 +0900
d/watch: update to new URL