# official debian repository: deb http://ftp.debian.org/debian/ testing main contrib non-free-firmware non-free deb-src http://ftp.debian.org/debian/ testing main contrib non-free-firmware non-free # security updates: deb http://security.debian.org/ testing-security main contrib non-free-firmware non-free deb-src http://security.debian.org/ testing-security main contrib non-free-firmware non-free