Marseille and Bordeaux failed to close the gap on Lyon after being held to draws against Le Mans and St Etienne respectively.
Bordeuax were indebted to a last-gasp equaliser from Fernando Cavenaghi to earn them a 1-1 draw at struggling St Etienne.
Blaise Matuidi threatened to give St Etienne all three points with a superb strike eight minutes after the break.
However, Cavenaghi popped up a minute from time with an equaliser from close-range.
Marseille were held to a frustrating goalless draw by Le Mans at the Stade Velodrome.
The home side dominated the game, but they could not find a way past a stubborn Le Mans defence.
Lille moved into sixth spot with a 2-1 win over Monaco.
Ludovic Obraniak opened the scoring for Lille on 12 minutes before Alejandro Alonso was sent off for Monaco after 67 minutes minutes.
Stephane Dumont added a second for Lille in the final minute, but there was still time left for Monaco to grab a late consolation through Adriano five minutes into injury-time.