Facebook CEO Mark Zuckerberg will return to Capitol Hill later this month to testify before the House Financial Services Committee regarding his company’s planned venture into the cryptocurrency space.

Zuckerberg will be the lone witness at a hearing entitled “An Examination of Facebook and Its Impact on the Financial Services and Housing Sectors,” which will be held Oct. 23. There, the social media magnate will get the chance to defend Libra amid a storm of criticism from lawmakers surrounding the digital offering.