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