On Tuesday Nov. 1, Airbnb will require all members to sign a “Community Commitment” to fight against discrimination. Any users that refuse to sign the commitment will be taken off the service. Their bookings will be cancelled and any rentals they have up will be removed.

“We believe that no matter who you are, where you are from, or where you travel, you should be able to belong in the Airbnb community,” Airbnb co-founded and CEO Brain Chesky wrote in an open email to hosts. “By joining this community, you commit to treat all fellow members of this community, regardless of race, religion, national origin, disability, sex, gender identity, sexual orientation or age, with respect, and without judgment or bias.”

Among their new policies is Open Doors, which provides alternative accommodation in cases where guests feel discriminated against in violation of their policy.

“Discrimination is the opposite of belonging, and its existence on our platform jeopardizes this core mission.,” he added. “Bias and discrimination have no place on Airbnb, and we have zero tolerance for them.”