The Biden administration plans to loosen the limits on tailpipe emissions proposed last year by the Environmental Protection Agency (EPA), giving automakers more time before they’ll be required to sell significantly more electric vehicles than gas-powered cars, The New York Times reported this weekend. Under the proposed regulations laid out by the EPA, EVs would have to account for 67 percent of new car and light-duty truck sales by 2032.

Rather than forcing manufacturers to start ramping up EV sales right away, the changes would allow them to make the shift more gradually through the remainder of the 2020s, sources told the NYT. After 2030, though, EV sales would need to drastically increase. Automakers have argued that the current cost of electric vehicles and the lack of charging infrastructure stand in the way of hitting such extreme targets as those proposed by the EPA. Last year, just 7.6 percent of new cars sold in the US were EVs, per NYT.

The revision is likely a move in part to appease labor unions, which represent a demographic seen as a key area of support for Biden and have expressed a need for more time to unionize new EV plants among other concerns, according to NYT. The rules are not yet finalized, but are expected to be published in the spring.