The Brazilian Grand Prix will stay on the F1 calendar until at least 2035 after the championship agreed a five-year extension with the race in São Paulo.
The deal, announced on Saturday at Interlagos, replaces a contract that was due to run until 2030.
A deal agreed at the track
Formula 1 announced the extension on the Saturday of this weekend's race, which runs under the name São Paulo Grand Prix.
It was agreed with the event's promoters, led by chief executive Alan Adler, and the city of São Paulo. F1 president and chief executive Stefano Domenicali said Brazil was "an important part of Formula 1's history and our future".
Last year's race weekend drew more than 300,000 spectators.
Money for an old circuit
The long contract gives the city and the promoters time to keep investing in Interlagos and its ageing facilities.
Adler credited the city's support for the continuing work to modernise the circuit.
More than 50 years of Interlagos
Interlagos held the first world championship Brazilian Grand Prix in 1973, won by Emerson Fittipaldi for Lotus.
The race moved to Jacarepaguá in Rio de Janeiro in 1978 and again from 1981 to 1989. It has been held at Interlagos every year since 1990.
This year's race starts at 10:30pm India time on Sunday 8 November.
Race it on Late Brake
Interlagos is one of the six real circuits in Late Brake, the free browser game. Chase the gold medal time there, then line up against the AI rivals or race other players online.
Sources: The Race, Autosport, BBC Sport, Wikipedia: Brazilian Grand Prix