Ah, right: https://addons.mozilla.org/en-US/developers/addon/nightly-tester-tools/versions/1423604 currently accepts Fx & Tb <tt>23.0</tt>, Sm <tt>2.20</tt>, even with no suffix, and OTOH it never concerned itself with <tt>toolkit@mozilla.org</tt>, so IIUC we can keep the versions @xabolcs had originally written in the patch.