Williams is set to introduce a new floor to its FW38 in Hungary this weekend as it bids to arrest a recent slump, having drifted away from contention at the front of the grid.
Williams held a 39-point advantage over Force India after the Canadian Grand Prix but that gap has now been slashed to 19, with Williams failing to score at the most recent round in Britain.
"Although the Hungaroring is a lower speed circuit than we have visited recently, it is a still a circuit where our car can perform well, and indeed Valtteri [Bottas] was running fifth last year before a collision dropped him out of the points," said technical boss Pat Symonds.
"We are bringing a new floor to this race as part of our continued development, but the real focus will be on the expected high temperatures and the completely resurfaced track which will be very demanding on the tyres."
Bottas is also wary of the challenges which Williams will encounter this weekend.
"The Hungaroring is probably the most intense track compared to the other events it falls around during in the season," he explained.
"It’s much tighter with many slow speed corners and a very technical track to drive, so definitely not the easiest."