--- /dev/null
+deb http://httpredir.debian.org/debian testing main
+deb-src http://httpredir.debian.org/debian testing main
+
+deb http://security.debian.org/ testing/updates main
+deb-src http://security.debian.org/ testing/updates main
+
+# jessie-updates, previously known as 'volatile'
+deb http://httpredir.debian.org/debian testing-updates main
+deb-src http://httpredir.debian.org/debian testing-updates main