The California Air Resources Board voted to amend a carbon-reduction program without disclosing how much it will raise gas prices in the state.

While the new environmental program mean gas prices could go up as much as 47 cents per gallon, the state is looking to toughen its environmental policies ahead of the second Trump administration.

California drivers may see gas prices climb next year after state regulators voted to toughen fuel standards in an effort to cut pollution and reliance on fossil fuel. The updated standards approved Friday by the California Air Resources Board set new goals for slashing emissions from fuel by 30% by 2030 and 90% by 2045.