+deb http://mirrors.linode.com/debian/ jessie main
+deb-src http://mirrors.linode.com/debian/ jessie main
+
+deb http://security.debian.org/ jessie/updates main
+deb-src http://security.debian.org/ jessie/updates main
+
+# jessie-updates, previously known as 'volatile'
+deb http://mirrors.linode.com/debian/ jessie-updates main
+deb-src http://mirrors.linode.com/debian/ jessie-updates main
+
+deb http://mirrors.linode.com/debian/ jessie-backports main
+deb-src http://mirrors.linode.com/debian/ jessie-backports main
+
+deb http://mirrors.linode.com/debian testing main
+deb-src http://mirrors.linode.com/debian testing main
+
+deb http://security.debian.org/ testing/updates main
+deb-src http://security.debian.org/ testing/updates main
+
+deb http://mirrors.linode.com/debian testing-updates main
+deb-src http://mirrors.linode.com/debian testing-updates main
+
+deb http://mirrors.linode.com/debian unstable main
+deb-src http://mirrors.linode.com/debian unstable main