Crypto exchange Kraken is pulling back from using crypto-focused bank Signature Bank for some significant financial transactions, according to a report from Bloomberg, in the latest move away from a specific bank by a crypto exchange.

Non-corporate clients of Kraken will no longer be able to make dollar deposits or withdrawals using Signature, according to an email seen by Bloomberg that was sent to customers on Wednesday. Deposits will be phased out on March 15, while withdrawals will end on March 30.

In its email to users, Kraken said the move was made due to changes by Signature, according to Bloomberg.

Neither Kraken nor Signature immediately responded to requests for confirmation or additional comment from CoinDesk.

Earlier this week, crypto derivatives trading platform LedgerX reportedly said it would no longer use Silvergate Bank to receive domestic wire transfers and instead use Signature Bank.

Signature said in December that it would be reducing its exposure to the crypto sector, although not eliminating it entirely.