Meta said Monday it will share access to its internal data with researchers seeking to understand online mental health, a concession that comes days before CEO Mark Zuckerberg is set to testify before Congress on the effects the company’s apps have had on teenagers.

Facebook‘s parent company announced on Monday that it would start sharing “privacy-preserving social media data” with select academics, beginning with the Center for Open Science. The center is a nonprofit organization dedicated to transparency in academic research. Researchers have been attempting to get access to Meta’s internal data for years.