According to a press release sent out Wednesday, Walmart has announced that face masks will be required to be worn inside all of its stores to limit the spread of the coronavirus.

This rule takes effect Monday, according to the release. Complimentary masks will be provided or shoppers can purchase them.

“While we’re certainly not the first business to require face coverings, we know this is a simple step everyone can take for their safety and the safety of others in our facilities,” the release says.

Stores will post signs informing shoppers about the rule and station a “health ambassador” near the entrance to remind shoppers about the requirement. All stores will have a single entrance.

Walmart said there will be exceptions for shoppers who are unable to wear a mask.

“We know some people have differing opinions on this topic,” the release says. “We also recognize the role we can play to help protect the health and well-being of the communities we serve by following the evolving guidance of health officials like the CDC.”