Valtteri Bottas and Zhou Guanyu will stay with the Alfa Romeo Sauber team for the third consecutive year in 2024.
Bottas, who joined from Mercedes in 2022, was under contract for next season but there had been some doubt about the future of his team-mate.
Representative Alessandro Alunni Bravi said the team had chosen “stability” as they continue their transition into the factory Audi effort by 2026.
The team are ending their relationship with Alfa Romeo after this season.
They will race under a new name next year but this has not yet been revealed. Although Audi is already a part-owner, the German car giant’s name is not expected to be used until it officially enters F1.
Bravi said: “Valtteri and Zhou are drivers of known talent and skill and they work really well together: they are well-matched and can push each other.
“Valtteri has taken a real leader’s role within the team, pushing us all to give our best; Zhou has made impressive steps forward in the last two years and we expect him to continue on this trajectory in 2024.”
Reserve driver Theo Pourchaire will also continue with the team.
Bottas, whose contract ends next season, said: “I have a feeling we have an exciting journey ahead of us. There is an impressive amount of work going on behind the scenes, in [the team’s base in] Hinwil and beyond, and now that the line-up is set for next year, we can focus fully on improving, starting this weekend in Singapore already. — BBC Sport