California-based food-delivery company DoorDash is seeking to raise $500 million in a funding round.

Temasek Holdings, a Singaporean investment firm, is holding discussions to lead the round which is set to value DoorDash at more than $6 billion, or 4 to 5 times the valuation from its last funding round in August last year. 

DoorDash’s other backers include Singaporean sovereign wealth fund GIC, SoftBank, Charles River Ventures, Khosla Ventures, Kleiner Perkins and Sequoia Capital. 

DoorDash has bagged a total of $971.8 million in over seven funding rounds.