1 deb http://http.us.debian.org/debian stretch main contrib non-free
2 deb-src http://http.us.debian.org/debian stretch main contrib non-free
4 deb http://security.debian.org/ stretch/updates main contrib non-free
5 deb-src http://security.debian.org/ stretch/updates main contrib non-free
7 deb http://http.us.debian.org/debian stretch-updates main contrib non-free
8 deb-src http://http.us.debian.org/debian stretch-updates main contrib non-free
10 deb http://http.debian.net/debian stretch-backports main contrib non-free
11 deb-src http://http.debian.net/debian stretch-backports main contrib non-free