More Pfizer vaccinations are making their way to the ACT.

An additional 4,000 doses will be made available at the Garran Surge Centre from Monday.

Capacity is currently sitting at 7,000 vaccinations a week, but will increase to 11,000, with more than half of Canberrans over the age of 16 receiving one dose of either Pfizer or AstraZeneca.

Residents aged 30 to 39 can now sign up to receive the vaccine, with eligibility increasing earlier this week.