Vaccine registration will open for those aged 25 to 29 from tomorrow morning.
The HSE portal will open so people in the age group can register for a Moderna or Pfizer jab - the two mRNA vaccines.
It comes just over a week after registration opened for 30-34 year-olds.
Calling all 25-29 year olds
You can register for an mRNA vaccine from TOMORROW pic.twitter.com/nnVmKD7TvH
— Stephen Donnelly (@DonnellyStephen) July 15, 2021
Anyone aged 18-30 can currently book an appointment with a pharmacy for a one-shot Janssen vaccine, but supplies of that vaccine remain limited.
Health officials continue to recommend that everyone under 50 get one of the two mRNA vaccines.
However, those aged under 34 will also be able to 'opt in' for an AstraZeneca vaccine - meaning they may be vaccinated sooner, depending on supply.