Haas will run a new rear wing at the Spanish Grand Prix, where it will also move on to Ferrari's upgraded power unit.
The debutant American outfit returned to the points in Russia, where it successfully introduced a new front wing. Though it opted against taking the upgraded Ferrari power unit in Sochi it will do so for the Barcelona race, meaning new engines for drivers Romain Grosjean and Esteban Gutierrez, to go alongside its aero update.
"We have got a new rear wing for Spain," team boss Guenther Steiner said. "We keep on bringing things, we just have to be sure that they work.