The genetic testing site, which recently admitted hackers accessed the data of 6.9 million users, has begun notifying users of a change to its terms of service that’s meant to “streamline arbitration proceedings where multiple similar claims are filed,” as spotted by Stack Diary.

The change forces users into binding arbitration for any disputes, meaning users will have to settle matters with the company outside of court. It also prevents them from filing class action lawsuits. 23andMe is only giving users 30 days from when they receive the email to opt out of the new policy, which you can do by contacting arbitrationoptout@23andme.com.