PSG had been beaten 2-1 by the same opponents in Ligue 1, but a Yoann Salmier own goal put them on their way to victory.
PSG successfully launched their Coupe de la Ligue title defence with Angel Di Maria and Dani Alves leading the way in a victory over Strasbourg.
PSG have recovered from their recent wobble, which saw them lose at Strasbourg. They're now facing them again in the cup and can't afford a defeat.
Paris Saint-Germain will start their Coupe de la Ligue title defence away at Strasbourg on Wednesday without Neymar.
Neymar has received permission from Paris Saint-Germain to fly to Brazil for a family emergency, a source confirmed to ESPN FC.
Caen began their Coupe de la Ligue campaign with a 1-0 victory away to Ligue 2 side Lorient.