James Forrest scored the only goal as Celtic got their pre-season campaign up and running with a win.
Brendan Rodgers’ side are in Austria ahead of their Champions League qualifiers, which start in less than two weeks.
Forrest scored a fine solo effort in the second half to secure a 1-0 win over SK Vorwarts Steyr and Callum McGregor went close late on.
Lewis Morgan started the game for the Bhoys following his move from St Mirren, while Jonny Hayes made his comeback off the bench from a broken leg.
There was also game time for teenagers Stephen Welsh and Kerr McInroy as Rodgers rotated his side.