Jersey's government says it is considering re-categorising Poland on its Safe Travel traffic light system.
The country is currently classed as green, meaning there's no requirement for arriving passengers to self-isolate.
The authorities say that could change in the next few days if the number of Covid-19 cases there continues to rise.
Switzerland has been upgraded to amber, requiring isolation until a second negative coronavirus test.
Aruba, the Faroe Islands and the Turks and Caicos Islands have become red countries, demanding 14 days' quarantine.
You can find the full lists of green, amber and red countries on the government website.