Honda will upgrade the engines of both Red Bull cars and one Toro Rosso for the French Grand Prix this weekend as they look to close the gap to Ferrari and Mercedes.
Red Bull's Max Verstappen and Pierre Gasly and Toro Rosso's Daniil Kvyat will all benefit at the Circuit Paul Ricard after Honda introduced a second upgrade of the season just four races on from their last.
Kvyat will receive a grid penalty for exceeding the allowed use of engine parts in one season, while team-mate Alexander Albon will not take up the upgrade until a later grand prix to avoid both Toro Rosso drivers picking up penalties at the same race.