debian/changelog

-camitk (4.1.2-2) UNRELEASED; urgency=medium
+camitk (4.1.2-2) unstable; urgency=medium
 
   * VTK7 compatibility. Closes: #909120
   * Avoid double delete (patch from Bernhard Übelacker)

debian/control

@@ -4,7 +4,7 @@ Uploaders: Andreas Tille <tille@debian.org>,
            Emmanuel Promayon <Emmanuel.Promayon@univ-grenoble-alpes.fr>
 Section: science
 Priority: optional
-Build-Depends: debhelper (>= 11),
+Build-Depends: debhelper (>= 11~),
                cmake,
                libvtk7-dev,
                libvtk7-qt-dev,