deb http://ftp.debian.org/debian stable main contrib non-free
deb-src http://ftp.debian.org/debian stable main contrib non-free

deb http://ftp.debian.org/debian stable-updates main contrib non-free
deb-src http://ftp.debian.org/debian stable-updates main contrib non-free

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