Sauber has finalised an extension of its Ferrari engine supply deal.
The announcement means all 11 Formula 1 teams have now firmed up their engine contracts for the first year of the new regulations - headlined by a switch to V6 turbo engines - in 2014.
Although Lotus has yet to officially announce it is staying with Renault, AUTOSPORT understands that the deal will happen.
Ferrari has supplied Sauber's engines since team founder Peter Sauber reclaimed his squad after BMW's exit in 2010.
The team had previously used Ferrari power from 1997 to the end of 2005, when BMW took Sauber over and turned it into a factory team for four seasons.
Sauber team boss Monisha Kaltenborn said: "We are proud to extend our relationship with such a prestigious and renowned brand and look forward to entering the 2014 season with a strong and reliable partner like Ferrari."
The new deal was described by Sauber as "multi-year".
2014 F1 ENGINE SUPPLIES
Red Bull, Lotus, Toro Rosso, Caterham
Ferrari, Sauber, Marussia
Mercedes, McLaren, Force India, Williams