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Adeyemi first set up Donyell Malen, who drilled his low shot through Kevin Muller to give the hosts the lead in the 11th minute.

The 22-year-old doubled the advantage six minutes later with his first goal after completing a textbook break.

Heidenheim briefly cut the deficit with Marvin Pieringer's powerful header after 39 minutes, but Dortmund restored its two-goal cushion before the break with Adeyemi's low drive wrongfooting the goalkeeper.

The visitors set up a nervy finish after being awarded a 74th-minute penalty for a foul by Niklas Sule on Mikkel Kaufmann, with Maximilian Breunig confidently hitting the back of the net for Heidenheim.

But Dortmund earned a spot kick of its own in stoppage-time thanks to Omar Traore's handball, and Emre Can coolly slotted it home to make it 4-2.

While it looked like Dortmund may be in for a nervy ending after Heidenheim's late penalty, that was not the case, and it means it extends a so far impressive home record.

The Black and Yellow are unbeaten in 37 Bundesliga home games on a Friday night (local time) since a 1-0 loss to Schalke in January 2004, which is a league record, level with Werder Bremen between 1984 and 1991.

Dortmund remains unbeaten so far this campaign, too, but Heidenheim's six-match winning run in all competitions has now ended.