U.S. Treasury Secretary Janet Yellen said banks are likely to become more cautious and may tighten lending further in the wake of recent bank failures, possibly negating the need for further Federal Reserve interest rate hikes.

Yellen said in a CNN “Fareed Zakaria GPS” interview that policy actions to stem the systemic threat caused by last month’s failures of Silicon Valley Bank and Signature Bank had caused deposit outflows to stabilize, “and things have been calm,” according to a transcript released on Saturday.

“Banks are likely to become somewhat more cautious in this environment,” Yellen said in the interview, which is scheduled to air on Sunday. “We already saw some tightening of lending standards in the banking system prior to that episode, and there may be some more to come.”