From midnight on Sunday, passengers arriving from France will be required to undertake two PCR tests on day zero and day five and isolate until they receive a negative result from their second test.
The move follows an increase in the number of Covid-19 cases in France.
Passengers arriving from a red country are required to be tested on arrival and must self-isolate for 14 days, while those arriving from green countries have a test on arrival and are advised to limit social contact until they have a negative result but are not required to isolate completely.