BMW Sauber have confirmed they will retain Germany's Nick Heidfeld and Poland's Robert Kubica as their drivers for the 2007 Formula One season.
Kubica replaced former champion Jacques Villeneuve
Kubica became the first Polish F1 driver when he replaced Jacques Villeneuve in August, and came third at Monza in only his third race.
"To be confirmed as a driver for 2007 proves that in the last five races I did the job expected," said Kubica, 21.
Sebastian Vettel, 19, will remain the official test and reserve driver.
Heidfeld had already been confirmed as having a drive with the team for the next campaign.