A bank’s credit metrics may soon rely more on how seriously it views equality between the sexes, according to DBRS Morningstar.

The ratings firm says a clear focus on gender diversity puts lenders in a better position to live up to the environmental, social and governance goals that investors increasingly demand.

Some of the world’s biggest investors have made clear gender diversity isn’t just a fad. Norway’s $1.3 trillion sovereign wealth fund, which owns 1.5% of the world’s stocks, wants the companies it owns to have at least 30% of their board positions held by women, it said this month.