The Basel Committee on Banking Supervision has published consultation paper that contemplates tougher disclosure requirements for banks, the committee announced Thursday.

Specifically, the committee proposes boosting the current disclosure obligations to require that banks also reveal the leverage ratio exposure amounts of securities financing transactions, derivatives replacement cost, and central bank reserves.

The proposals come amid concerns that banks may be engaging in “window dressing” activity that impacts their existing leverage disclosures.

“Heightened volatility in various segments of money and derivatives markets around key reference dates (e.g. quarter end) has alerted the Basel Committee to potential regulatory arbitrage by banks,” the committee says in a news release. “A particular concern is ‘window-dressing’, in the form of temporary reductions of transaction volumes in key financial markets around reference dates resulting in the reporting and public disclosure of elevated leverage ratios.”

This sort of window-dressing activity “is unacceptable, as it undermines the intended policy objectives of the leverage ratio requirement and risks disrupting the operations of financial markets,” says the committee.

“In evaluating its leverage ratio exposure, a bank should assess the volatility of transaction volumes throughout reporting periods, and the effect on its leverage ratio requirements. Banks should also desist from undertaking transactions with the sole purpose of reporting and disclosing higher leverage ratios at reporting days only,” the committee warns.

For now, the committee is considering changes to the banks’ leverage disclosure requirements, which would be adopted by 2022. It will alos consider revising the leverage calculation requirements to deal with this sort of activity.

Comments on the proposals are due by March 13, 2019.