According to the Daily Mail, the move would mean those travelling to the country during the February break will have to get a booster if they received their second dose any earlier than May last year.
Without a recent jab, France will effectively treat travellers as though unvaccinated and will only allow them to enter with a "compelling reason", such as on compassionate grounds.
Eurostar warned customers of the move, stating: "If you had your full vaccine course nine months ago or more AND you haven’t had a Covid-19 vaccine booster, you must follow the rules for unvaccinated passengers to enter France."