The Australian government has announced YouTube will be required to ensure account holders are at least 16 years old starting in December.

Officials in Australia had previously indicated they would exempt YouTube from the ban, which prohibits people under 16 from having social-media accounts.

Australia said on Wednesday it will add YouTube to sites covered by its world-first ban on social media for teenagers, reversing an earlier decision to exempt the Alphabet-owned video-sharing site and potentially setting up a legal challenge.