Haas have confirmed that Romain Grosjean will be one of their drivers for the 2016 season.
More recently, the 29-year-old has been behind the wheel of the Lotus Renault.
However, the Frenchman has now agreed to compete in the colours of the American team that was formed 12 months ago.
"Really happy and proud to be racing for @HaasF1Team from 2016 onwards. A new great and very exciting challenge," he wrote on Twitter this afternoon.
"Taking a decision about your future isn't easy. I'd like to thank my family and friends for their support. Proud of our choice."
Grosjean recently conceded that he would one day like to race as part of the Ferrari team.