I-94 Expiration date Correction - Visitor Visa

[nagarjuna.m]

Hello!!

My parents applied for 6 month visitor visa extension and it was approved. But when they left after 1 yr, the departure date on the I-94 is captured correctly, but the I-94 Expiration date still shows the date that was issued at port of entry. How do i get the Expiration date updated to match the extension date, so that when they come next time, it doesn't look like they overstayed 6 months. Who do i contact to get it corrected.

Thank you..