Japan is set to experiment with opening its borders to small groups of vaccinated foreign tourists as soon as this month, Fuji News Network reported Friday, in a potential lifeline for the country’s ailing travel industry.

Those wishing to visit must have undergone three COVID-19 vaccination shots and be part of a package tour with a fixed itinerary, FNN said, citing multiple government officials. The limited resumption of inbound tourism will be treated as an experiment and, if infections do not spread, the program will be expanded, it said.

Japan is also looking at doubling the daily entry cap to 20,000 and accepting overseas tourists from June, the Nikkei newspaper reported, citing unnamed sources. That report said a decision could come by the end of this month.