The Pirates transferred Heller (shoulder) to the 60-day injured list Wednesday, Noah Hiles of the Pittsburgh Post-Gazette reports.
Heller initially landed on the injured list at the end of August with right shoulder inflammation, and his move to the 60-day IL will officially make him ineligible to return before the end of the season. He'll surrender his spot on the 40-man roster to Jake Woodford, who will start Wednesday's game against the Cardinals.