Update on Wednesday, July 3: Gov. Gavin Newsom signed the bill into law.

California is poised to become the first state to ban racial discrimination against people based on their natural hairstyle.

The State Assembly voted unanimously on Thursday to approve the measure, which the State Senate approved in April. It now heads to the desk of Gov. Gavin Newsom, a Democrat, to be signed into law.

The bill would update the definition of race used in existing law to be “inclusive of traits historically associated with race, including, but not limited to, hair texture and protective hairstyles.”

“In a society in which hair has historically been one of many determining factors of a person’s race, and whether they were a second-class citizen, hair today remains a proxy for race,” the bill says. “Therefore, hair discrimination targeting hairstyles associated with race is racial discrimination.”