The reigning champions had been due to begin their title defense at Stade Bollaert-Delelis on Saturday, six days after their 1-0 Champions League final defeat to Bayern Munich in Lisbon.
Thomas Tuchel's men played three Champions League games in 12 days in Portugal - where the competition was concluded having been halted in March due to the coronavirus pandemic - and PSG wanted to give their players more time to recover before beginning the new season.
The Ligue de Football Professionnel (LFP) confirmed that PSG's request has been approved by both Lens and local broadcaster Canal +, with the fixture rearranged to Thursday, September 10.
In addition, this weekend's clash between Strasbourg and Nice has been brought forward a day, to the Saturday evening time slot originally occupied by Lens' home game against PSG.
The Lens fixture, which now comes after the international break, will still be PSG's first match of the new season and they are due to host rivals Marseille three days later.
Marseille had been set to begin their campaign last Friday but their trip to Saint-Etienne was postponed after OM confirmed they had four positive COVID-19 cases in their squad.
On Tuesday, Marseille revealed "three new suspected cases of COVID-19 were detected" and said the LFP had been informed.
Given the LFP's directive that more than three positive cases would likely lead to a postponement, Marseille's trip to Brest this weekend would also appear to now be in doubt.