Martyn Corrigan, Livingston's David McNamee and Kilmarnock forward Steven Naismith have been added to the squad. Hammell and Kerr are already in the squad.
Scotland meet Turkey at the Tulloch Caledonian Stadium in Inverness on Wednesday 15 March, kick-off 7.30 pm. Admission is just £5 for adults and £2 concessions.
Revised Scotland squad:
Goalkeepers
Mark Brown (Inverness Caledonian Thistle)
Iain Turner (Everton)
Defenders
Christophe Berra (Heart of Midlothian)
Martyn Corrigan (Motherwell)
Steven Hammell (Motherwell)
David McNamee (Livingston)
Adam Virgo (Celtic)
Midfield
Ian Black (Inverness Caledonian Thistle)
Brian Kerr (Motherwell)
Michael McIndoe (Doncaster Rovers)
John Rankin (Ross County)
Barry Robson (Dundee United)
Forwards
Craig Dargo (Inverness Caledonian Thistle)
Darryl Duffy (Hull City)
Lee Miller (Dundee United)
Steven Naismith (Kilmarnock)