Apple has just suspended its Apple Pay service for Russia’s Mir card payment system, Russia’s largest lender and payments system said on Friday, closing a loophole that had allowed Russians to keep using the service.

Apple has restricted the use of Apple Pay, which began operating in Russia in 2016, on March 1 in the wake of Russia’s decision to send tens of thousands of troops into Ukraine on Feb. 24, preventing Russian Mastercard and Visa cardholders from using the service.

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According to Russia’s National Card Payment System, Russia’s homegrown system, Mir, remained connected to Apple Pay until that access was terminated on Thursday.

“Apple has informed NSPK it is suspending support for Mir cards in the Apple Pay payment service. Starting from March 24, users cannot add new Mir cards to the service. Apple will stop all operations of previously added cards over the next few days,” NSPK said on Friday.

Sberbank, Russia’s largest bank, said Apple had informed it of its plan to further restrict access to its Apple Pay service. The bank stated that “further use of Mir cards in Apple Pay will not be available.”