Lionel Messi scored twice as PSG beat Montpellier 4-0 on Saturday.
Messi scored twice to give him six goals in Ligue 1 this season. Kylian Mbappe scored from the penalty spot in the second half after Angel di Maria made it 3-0 before halftime.
PSG leads Monaco by 15 points with one game left. 13th place Montpellier.
Mbappe now has 15 Ligue 1 goals this season, one more than Monaco's Wissam Ben Yedder.
Ben Yedder's hat trick put Monaco on the brink of a direct Champions League spot for next season as they beat Stade Brestois 4-2 at home for their ninth straight Ligue 1 win.
Ben Yedder scored twice in four minutes early in the second half to lift Monaco to second place on 68 points with one game remaining.
Olympique de Marseille fell to third on goal difference after a 2-0 loss at Stade Rennes.