Red Bull have made two changes to their car for the British Grand Prix this weekend after a nightmare weekend in Austria.
Max Verstappen was forced to retire after he was hit by Kimi Antonelli on lap one in Spielberg.
His team-mate Yuki Tsunoda, meanwhile, endured a horror race, receiving a 10-second time penalty for colliding with Alpine's Franco Colapinto before finishing 12th.
Red Bull have brought updates to this weekend's Grand Prix in Silverstone as they look to get back on pace with McLaren and Ferrari.
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Tsunoda will be limited in terms of on-track testing time with the new parts, however, as he has been replaced for FP1 by Arvid Lindblad.
Each team must allow one rookie driver to take part in a practice session in four different Grands Prix across the season, with Red Bull choosing Silverstone to give British driver Lindblad his first taste of driving an F1 car in a competitive session.
Tsunoda will return for FP2, where he will hope to further attempt to get to grips with a tricky second Red Bull car.
The team have attempted to rectify some of their issues by introducing two upgrades to their floor ahead of FP1.
They have made changes to the floor body and the floor fences, which are primarily aimed at balancing the load that goes through the floor.
Describing how the floor body upgrade works, Red Bull note that they have 'revised surfaces to improve pressure distribution over the length of the floor allowing more load to be extracted whilst maintaining adequate flow stability'.
It is unclear how much time the team expect to gain from the changes, with the performance of the Red Bull appearing to differ from track to track this season.
The car does not perform well in high temperatures this season - meaning Red Bull might be pleasantly surprised by this weekend's weather forecast.
Despite the heatwave temperatures earlier this week, Sunday is expected to see a high of 21 degrees Celsius at the Northamptonshire circuit.
Topics: Red Bull Racing, Max Verstappen, Formula 1, FIA
Ryan Smart