-# stretch
-series_ver stretch-backports
-debian/adjust-for-release stretch
-dch --local ~bpo9+ --distribution stretch-backports --force-distribution "No-change backport to Debian Stretch"
-debuild -S -sd -nc -v$ver
+# bullseye
+series_ver bullseye-backports
+[ ! -x debian/adjust-for-release ] || debian/adjust-for-release bullseye
+dch --local ~bpo11+ --distribution bullseye-backports --force-distribution "No-change backport to Debian Bullseye"
+dpkg-buildpackage -S -sd -nc -v$ver