Paul Di Resta has been retained by Williams to be their reserve driver behind Felipe Massa and Lance Stroll for the 2017 season.
The Scotsman, who has 58 race starts in Formula 1 to his name after three consecutive seasons with Force India, was reserve team driver for Williams in 2016.
He will now continue in that role and is looking ahead to getting to grips with the new car and regulations.
“I am delighted to remain at Williams as reserver driver for the 2017 season,” Di Resta said via the official Williams website.
“I’m looking forward to getting to grips with the controls and procedures of the FW40 and understanding the new regulations.
“I would like to take this opportunity to thank Claire and everyone at Williams for their continued support in being part of the team.”
Deputy team principal Claire Williams welcomed the announcement and underlined the importance of Di Resta’s experience as they venture into a new aerodynamic era.
“It’s great for us to retain someone with Paul’s experience in the team,” Williams said.
“His extensive Formula One knowledge will once again be invaluable, especially with new regulations in place for the 2017 season.
“Paul has been a great asset to the team over the past year and it is great that we will be able to continue working with him again in 2017.”