Aliki Stylianou, the central bank's spokeswoman, confirmed the additional two-day closure on Wednesday. The cash-strapped lenders have been closed since Saturday to avoid a bank run.
The Parliament this week rejected a plan to take a portion of bank deposits.
That has left Cypriot officials looking for alternative ways to scrounge up some 5.8 billion euros ($7.51 billion) that the country's euro area partners and the IMF expect in order to loan another 10 billion euros.
The money is needed to shore up the ailing banks and government finances. Cypriot authorities kept banks closed in order to avoid a run on the lenders.