Editor's Note: On Monday, October 31, Postmates announced that is has raised $72 million in new funding, giving the company a valuation of $600 million.

DoorDash, UberEats, Caviar, and GrubHub are just a few of the main competitors in the fight to deliver your Chinese takeout. But the San Francisco-based Postmates is attempting to pull ahead of the pack.

On Thursday, the four-year-old company filed to raise a Series E round of funding of up to $190 million at $5.27 per share, according to documents obtained by Forbes. The news comes after Postmates's announcement that it was adding four cities--Fort Lauderdale, New Orleans, Orlando, and Tampa--to the 40 it currently serves.

The Y Combinator-based DoorDash raised $127 million earlier this year, missing its target valuation of $1 billion to land at $700 million. The last time Postmates raised funding was an $80 million round in June 2015.

Its valuation has stayed stagnant since then, despite its claim of selling $500 million in gross merchandise volume. (Not to be confused with revenue, this is the total sales dollar value for goods sold.) Much of its sales likely stem from national partnerships with 7-Eleven, Chili's, Chipotle, Panda Express, and Walgreens. In May, Postdates delivered its 10 millionth order.