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: Andreas Tille <email@example.com>
Date: Wed May 23 13:31:43 2018 +0200
Cleanup metadata from redundant fields that are notpart of UpstreamMetadata any more