Falkirk will head for Dingwall as reward for knocking Premiership Partick Thistle out of the League Cup this week.
The Bairns were unseeded for the draw and guaranteed to meet Premiership opposition.
They were late out of the draw with only Inverness and the Staggies remaining as potential opponents.
But it was Jim mcIntyre’s men who were paired with the Bairns.
Other games in the last 16 are:
Morton v Motherwell
Celtic v Raith Rovers
Livingston v Inverness CT
Dunfermline v Dundee United
Rangers v St Johnstone
Hibs v Aberdeen
Ross County v Falkirk
Kilmarnock v Hearts
Ties will be played on Tuesday, September 22 or Wednesday, September 23