About 100,000 people signed up for health insurance through Obamacare’s troubled online federal exchange last month even as government contractors raced to revamp the website, Bloomberg News reported.

An anonymous person familiar with the website’s progress told Bloomberg that about 100,000 customers successfully selected a plan in November, roughly four times more than the amount of sign-ups in October. That number represents a steady increase in sign-ups, the person said, although the final enrollment numbers were still being calculated.

The White House announced Sunday that it met its goal of “having a system that will work smoothly for the vast majority of users.” The Centers for Medicare and Medicaid Services said that 50,000 users can now access the federal exchange simultaneously.