St. Louis-based retailer Schnucks is expanding its grocery delivery service.

Schnucks, which operates 100 stores in Missouri, Illinois, Indiana, Wisconsin and Iowa, and its delivery service partner Instacart will now offer same-day service from the majority of Schnucks stores, according to a news release.

Beginning July 13, Schnucks customers in three Missouri cities and nine Illinois cities will be able to order groceries from and have them delivered by Instacart in as little as an hour.

“Schnucks is committed to giving our customers premier products and the best shopping experience,” says Andrew Nadin, the chain’s chief marketing officer.

As part of the expanded partnership, Instacart is offering Schnucks customers a free one-year subscription to Instacart Express, which enables unlimited free deliveries on orders of more than $35. The offer expires Aug. 13.

Schnucks and Instacart launched their partnership in February with deliveries to customers in St. Louis; Rockford, Illinois; and Evansville, Indiana.