Williams have announced that development driver Susie Wolff will have a larger role to play in the upcoming Formula 1 season.
The 30-year-old will be more involved in the team's simulator and will carry out more in-car testing for the new campaign.
"Susie has proved herself to be a valuable addition to our driver roster and her feedback during simulator sessions is second to none," said Williams' technical director Mike Coughlan.
"As a result we will be stepping up her role this year and I'm looking forward to the progress we can make with Susie's input in conjunction with that of Pastor [Maldonado] and Valtteri [Bottas]."
Wolff added: "I really enjoy my time working with Williams and feel very much at home here. Last year was a valuable experience and I certainly feel that I've developed a lot as a driver."
Wolff joined the team in April last year.