deb http://ftp.br.debian.org/debian/ stretch main deb-src http://ftp.br.debian.org/debian/ stretch main deb http://security.debian.org/debian-security stretch/updates main deb-src http://security.debian.org/debian-security stretch/updates main # stretch-updates, previously known as 'volatile' deb http://ftp.br.debian.org/debian/ stretch-updates main deb-src http://ftp.br.debian.org/debian/ stretch-updates main