Lyon eked out an ugly 1-0 victory over struggling neighbours Saint-Etienne on Friday with a 15th-minute penalty by Moussa Dembele.
Dembele penalty gives Lyon derby win
Moussa Dembele celebrates after converting his penalty for Lyon
The 124th derby between the bitter rivals did little to suggest either that Lyon can force their way into contention for a European place or that Saint-Etienne can escape the foot of the Ligue 1 table.
Lyon climbed to 10th, six points behind third-place Marseille, ahead of the rest of the weekend fixtures.
Saint-Etienne's seventh straight loss left them six points away from safety.
Lyon will face sterner tests in the coming week as they take on five teams above them: Marseille, Monaco, Nice, Lens and Lille.
Health restrictions meant the derby was played in front of just 5,000 spectators in a stadium that holds 60,000.
Even at home against the last place team, Lyon played Dembele as a sole striker but he did just enough to win the game.
Dembele was brought down by Timothee Kolodziejczak in the 15th minute and then converted the penalty.
"It's an important and deserved result," said Lyon coach Peter Bosz, before adding: "The team got nervous because we couldn't score the second goal. Against good teams we have always played well, but we have lost against supposedly weaker opponents. We are conceding fewer chances but we need to score more and play better, for sure."
Pascal Dupraz the Saint-Etienne coach acknowledged his team struggled.
"It was too poor," he said. "It was better after half-time but not technically coherent enough to put Lyon in more difficulty."