Uber said late Tuesday that it has hired Expedia boss Dara Khosrowshahi as its new chief executive.

Khosrowshahi will be at Uber's headquarters in San Francisco for an 'all-hands' gathering to meet workers at the controversy-battered company.

"We are delighted to announce that Uber's Board has voted unanimously to appoint Dara Khosrowshahi to be our new CEO," Uber executives said in an email sent to employees late Tuesday.