The quarter-finals of the Scottish League Cup will see holders Celtic travel to Tynecastle to face Hearts.
Championship side Hibernian, who knocked out high-flying Aberdeen in the previous round, will host Dundee United, while Ross County will travel to Inverness Caledonian Thistle in one of only two all-Premiership ties.
Greenock Morton, thrashed 4-0 yesterday at home to Rangers, have a home tie against St Johnstone.
The ties will be played on 27 and 28 October.
Draw in full:
Hibernian v Dundee United
Greenock Morton v St Johnstone
Inverness Caledonian Thistle v Ross County
Hearts v Celtic