The Denver City Council voted unanimously to ban gay conversion therapy for minors in the city on Monday night.

Denver is the first jurisdiction in Colorado to pass such a prohibition, according to a news release from the office of Mayor Michael Hancock.

Hancock’s office proposed the prohibition.

“This is a very proud moment for my administration, for members of City Council, and for everyone in Denver who values inclusion and acceptance,” Hancock said in the release.

The ban, recommended by Denver’s LGTBQ Commission and submitted by the Office of Human Rights and Community Partnerships, will “protect youth from dangerous and discredited practices aimed at changing their sexual orientation or gender identity or expression,” the release said.

The conversion ban is aimed at state-licensed therapists who may claim that being gay or transgender is a mental illness. The ban also aims to protect parents of LGTBQ as well, the release said.