Thomas Tuchel's men have again been left to lick its wounds after a European disappointment after surrendering a 2-0 first-leg lead against Manchester United in the last 16, losing 3-1 at Parc des Princes last week.
The inquest into its latest meltdown in Europe's biggest club competition will go on, but PSG did at least continue its procession to another Ligue 1 title in style at Stade Gaston-Gerard on Thursday (NZDT).
Kylian Mbappe, who said he has had trouble sleeping in the aftermath of the United defeat, had a goal sandwiched by fine finishes from Marquinhos and Angel Di Maria - the latter a wonderful free-kick - as PSG moved 17 points clear of Lille at the top of the table.
Substitute Eric Maxim Choupo-Moting's second league goal for the club added gloss to the scoreline in second-half injury time.
Any hope Dijon had of furthering PSG's misery was dented after just seven minutes, when two markers allowed Marquinhos to head home a Di Maria corner at the near post.
The host did not lack the confidence to press in search of a quick response and Wesley Said flashed a long-range effort of wide before Mbappe was thwarted by an impressive Runar Runarsson save at the other end.
Mbappe did double the lead five minutes before half-time, however, bundling home Layvin Kurzawa's low left-wing delivery into an empty net after Runarsson failed to deal with it.
Just five minutes after the restart Di Maria extinguished any lingering Dijon hopes by bending a free-kick in off the right-hand post.
Mbappe was less fortunate as he struck the woodwork late on, but there was more misery for Dijon, who remain in the relegation play-off spot, as Choupo-Moting slid home a fourth in the 92nd minute.