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: Dirk Eddelbuettel <email@example.com>
Date: Fri Jan 1 17:22:01 2021 -0600
releasing package quantlib-refman-html version 1.20-1