Indian driver Arjun Maini has been retained by Haas in a developmental role for 2018.
Haas has confirmed an unchanged young driver line-up for the new season, with American Santino Ferrucci also retained this week. Maini was signed to Haas for last year the same weekend he won his first race in GP3, where he went on to finish ninth in the championship last year.
This year Maini will move up to Formula 2, the series directly below F1. The Haas youngsters will be teammates at Team Trident this season.