If the IRS sent a notice requesting the update, you may include your payment with the forms, when you send them in. If the payment is received by the IRS before the tax deadline of April 18th, then there will not be any penalties or interest.
If you are faxing the forms to the IRS, you may also use their direct debit site to make the payment. This TurboTax FAQ has an explanation and a link to the IRS site.
https://ttlc.intuit.com/replies/4232128
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