Stretch

# deb http://mirror.selectel.ru/debian stretch main
deb http://mirror.selectel.ru/debian stretch main non-free contrib
deb-src http://mirror.selectel.ru/debian stretch main non-free contrib
deb http://security.debian.org/debian-security stretch/updates main contrib non-free
deb-src http://security.debian.org/debian-security stretch/updates main contrib non-free