deb https://deb.debian.org/debian stable main contrib non-free non-free-firmware
deb-src https://deb.debian.org/debian stable main contrib non-free non-free-firmware

deb https://security.debian.org/debian-security stable-security main contrib non-free non-free-firmware
deb-src https://security.debian.org/debian-security stable-security main contrib non-free non-free-firmware

deb https://deb.debian.org/debian stable-updates main contrib non-free non-free-firmware
deb-src https://deb.debian.org/debian stable-updates main contrib non-free non-free-firmware