#deb http://archive.debian.org/debian/ stretch main contrib non-free
#deb http://archive.debian.org/debian/ stretch-proposed-updates main contrib non-free
#deb http://archive.debian.org/debian-security stretch/updates main contrib non-free
#deb http://deb.debian.org/debian/ buster main non-free contrib
#deb http://deb.debian.org/debian/ buster-updates main non-free contrib
#deb http://security.debian.org/ buster/updates main non-free contrib
deb http://deb.debian.org/debian bullseye main contrib non-free
deb http://deb.debian.org/debian bullseye-updates main contrib non-free
deb http://security.debian.org/debian-security bullseye-security main contrib non-free