MoneySavingExpert founder Martin Lewis urged anyone aged 45 to 70 to see if they can boost their state pension by up to £5,800.
But it's important to act quickly, as the big perk of the scheme ends in April 2023.
Speaking on The Martin Lewis Money Show on ITV, Lewis said: "If you're aged 45 to 70 you need to check ASAP if you can boost your state pension."