Poland continues to tighten its grip on the nation’s gambling market, prompting operators like 888 Holdings to join the exodus of operators not holding a local gaming license.

This week, Polish poker players reported that 888Poker had informed its customers that their ability to play on the site was coming to an end as of June 5. The site, which has already blocked new players from setting up accounts, said the exit was prompted by a “business reevaluation.”

Last December, the Polish Gambling Act was amended to explicitly ban online gambling operators not holding a local license. The Ministry of Finance has given local internet service providers a July 1 deadline to begin blocking all online gambling domains tagged with a scarlet letter on the Ministry’s burgeoning blacklist of sites it deems to be flouting the new law.

That blacklist continues to grow and now contains some 235 domains – a pale shadow of similar lists in other European markets, but growing nonetheless. And social media giant Facebook could soon find its name on the Ministry’s hit list, according to deputy finance minister Wiesław Janczyk.