Airbnb has hired former Attorney General Eric Holder. 

CEO Brian Chesky announced the hire in a blog post on Airbnb's website. Holder will help "craft a world-class anti-discrimination policy," according to the post. 

"I’m looking forward to working with Airbnb to develop and implement a world-class anti-discrimination policy," Holder said in a statement. "Airbnb is committed to building a community where everyone can belong, no matter who they are or what they look like. I'm eager to help them craft policies that will be the model for companies who share Airbnb's commitment to diversity and inclusion."

The move comes after Airbnb announced in early June that it would review the platform to help prevent discrimination from hosts against guests. The company has been in the news after guests experienced racism and discrimination while trying to rent through Airbnb. 

In May 2016, Rohan Gilkes wrote on Medium about his experience of being discriminated against while trying to rent an Airbnb as a black man. The post sparked the hashtag #AirbnbWhileBlack on Twitter andnumerous stories of discrimination have surfaced since. 

Chesky has acknowledged that the problem is worrisome for the company and discussed it at the Fortune Brainstorm Tech conference last week.

"When we designed  the  platform, three white guys, there were a lot of things we didn't think about," Chesky said to an audience at the conference. "There are racists in the world and we need to have zero tolerance."

 The announcement of Holder's hiring is an effort to be more transparent about how Airbnb is working to solve this issue, which the company considers the greatest challenge it currently faces, Chesky wrote in Wednesday's post. 

"This process isn’t close to being over, but we want to be as transparent as possible along the way because I know we’ve failed on that front previously," Chesky said. "I want us to be smart and innovative and to create new tools to prevent discrimination and bias that can be shared across the industry."

This story first appeared on Business Insider.