-# buster
-series_ver buster-backports
-debian/adjust-for-release buster
-dch --local ~bpo10+ --distribution buster-backports --force-distribution "No-change backport to Debian Buster"
+# 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"