Food delivery app DoorDash announced Monday that it will expand its service to alcohol delivery.

Users will now be able to order beer, wine, and spirits for delivery available through "DoorDash Marketplace." Alcohol delivery will be offered across 20 states, the District of Columbia, Canada, and Australia. DoorDash did not specify which 20 states will have alcohol delivery.

The move is expected to reach over 100 million customers worldwide.

The feature is only available to customers who are 21 and older and checkout will require online identification, as well as ID to be checked by the delivery person.

"Over the past year, many cities where we operate evolved their legislation in order to permit the delivery of alcohol to residents' homes. Over that time, we worked tirelessly to build a trusted alcohol ordering and delivery experience for merchants, customers, and Dashers," Caitlin Macnamara, Director, Alcohol Strategy & Operations at DoorDash, said in a press release.

DoorDash's move comes after its top competitor Uber Eats acquired alcohol delivery service Drizly in February for about $1.1 billion in stock and cash.

DoorDash said that the addition of alcohol can increase restaurants' average orders by 30%.

An alcohol delivery service could also help prevent drunk driving.

"We are proud to work alongside DoorDash to strengthen responsibility efforts in our communities and on our roadways by providing guidance and proven resources to help prevent impaired driving and underage drinking," said Chris Swonger, President & CEO, Distilled Spirits Council, in a press release.