deb http://deb.debian.org/debian/ bullseye main contrib non-free
deb http://deb.debian.org/debian-security/ bullseye-security main contrib non-free
deb http://deb.debian.org/debian/ bullseye-updates main contrib non-free

# Legacy
# deb http://deb.debian.org/debian/ buster main contrib non-free
# deb http://deb.debian.org/debian/ buster-backports main contrib non-free