The e-commerce giant looks to increase Whole Foods locations to assist with its Prime Now delivery service.

Amazon plans to open Whole Foods stores across the U.S., opening locations in more suburban and other areas in order to grow its Amazon Now delivery service.

According to a report by The Wall Street Journal, Whole Foods employees are evaluating potential retail spaces in parts of Idaho, southern Utah and Wyoming—that don’t currently offer Whole Foods locations. The locations it’s considering are around 45,000 square feet—slightly bigger than the average Whole Foods—allowing extra space for Amazon delivery and pickup.

Currently, Amazon’s Prime Now delivery service is available in 60 cities, and online grocery pickup from Whole Foods stores is offered in nearly 30 cities.

According to The Wall Street Journal, Amazon is reportedly working to grow its delivery and pickup services to its fleet of 475 Whole Foods stores in the U.S.