Twitter is set to make a major change to its verification system in April, as it removes the blue check-mark status from accounts that were verified before Elon Musk’s acquisition of the social media platform. Only users who have subscribed to Twitter Blue or the new Twitter Verified Organizations program will be able to keep their blue check-mark status. The latter requires a monthly payment of $1,000, with an additional $50 per month for each affiliate subaccount.

Previously, Twitter verified accounts of public interest to help users distinguish between genuine accounts and imposters or parodies. However, the company did not charge for this service until now. Musk criticized Twitter’s old verification system as “corrupt” and opened it up to any paying customer, with the intention of democratizing the status symbol while generating new revenue for the platform.

Before the change, Twitter had more than 420,000 verified accounts. After Musk took over, the company changed the description of legacy verified accounts to say that they “may or may not be notable.” Musk has been vocal about the need for Twitter to generate subscription revenue to survive. In his first memo to Twitter staffers, he stated that the company needs subscription services to account for around half of its revenue.

Twitter introduced the gold check-mark for businesses and organizations and a grey check-mark for government accounts. With the new system in place, legacy verified accounts will lose their blue check-mark status unless the account holder subscribes to Twitter Blue or the Twitter Verified Organizations program. Twitter has suspended signups for Twitter Blue in the past to prevent fake and parody accounts, but it relaunched the service with measures to stop impersonators.