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: Felipe Sateler <email@example.com>
Date: Mon Apr 16 13:54:49 2018 -0300
Change maintainer address to firstname.lastname@example.org
Author: Ondřej Nový <email@example.com>
Date: Mon Feb 19 10:11:24 2018 +0100
d/control: Set Vcs-* to salsa.debian.org
The Vcs URL git://git.debian.org/pkg-multimedia/wsynth-dssi.git is deprecated/defunct, https://anonscm.debian.org/git/pkg-multimedia/wsynth-dssi.git was tried instead. Please update the Vcs field in debian/control.