deb http://ftp.uk.debian.org/debian/ jessie main non-free contrib deb-src http://ftp.uk.debian.org/debian/ jessie main non-free contrib deb http://security.debian.org/ jessie/updates main contrib non-free deb-src http://security.debian.org/ jessie/updates main contrib non-free # jessie-updates, previously known as 'volatile' deb http://ftp.uk.debian.org/debian/ jessie-updates main contrib non-free deb-src http://ftp.uk.debian.org/debian/ jessie-updates main contrib non-free