Jost Capito threw down the gauntlet to Alexander Albon and challenged him to improve in the wake of his new contract.
Williams have tied down the 26-year-old after an impressive debut season to date. Their gamble to bring the British-Thai racer back into Formula 1 after a year away appears to have paid off despite their struggles to provide him with a competitive car.
It was announced on Wednesday that Albon has signed a new deal to stay with the team for at least two more seasons beyond this one. Williams chief Capito is thrilled with his impact so far, but has outlined at least one area where he can still give more.