official-package-repositories.list

deb http://packages.linuxmint.com rosa main upstream import

deb http://extra.linuxmint.com rosa main

deb [arch=amd64] trusty main restricted universe multiverse
deb [arch=amd64] trusty-updates main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu/ trusty partner