Olson was added to the Tigers' 40-man roster Tuesday, Evan Petzold of the Detroit Free Press reports.
Olson spent the entirety of 2022 with Double-A Erie, recording a 4.14 ERA and 1.23 WHIP through 119.2 innings. He was placed on the 7-day injured list in September for an undisclosed reason, but there has been nothing to suggest he's in serious danger of missing spring training.