Because it's a change of income, you'll need to file an amended return unless the IRS corrects it for you.
Wait until the original processes. If the IRS does not suggest the correction, file a 1040X Amended return.
It should not result in additional tax, but there are credits that are based on your income, so your tax liability might adjust. If you will owe, be sure to have that paid by April 15th.
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