Any entity with an EIN must update the responsible party information per IRS regulations. The IRS requires that "entities must report any changes to the responsible party to the IRS within 60 days by using Form 8822-B, Change of Address or Responsible Party."
The responsible party for your organization would be the either the Treasurer/VP Finance or the President. More information on Responsible Parties can be found here;
https://www.irs.gov/businesses/small-businesses-self-employed/responsible-parties-and-nominees
Completed Forms 8822-B should be mailed to the IRS, the address varies by your organization's location.