Top scorer Aaron Drinan struck in stoppage time to clinch a 2-0 home win for second-placed Swindon over Gillingham. Ryan Tafazolli had opened the scoring for the Robins, who secured a fourth win in five league games.
Gillingham had the better of the early exchanges and created the brighter openings, but ultimately had no answer once Tafazolli broke the deadlock and Drinan settled matters late on.
Visitors Make the Brighter Start
The visitors had the better of the early exchanges, with Ethan Coleman flashing a header over from Aaron Rowe's cross before Rowe himself fired wide from a corner.