Knoxville, TN (WOKI) Allegiant is out with a warning Wednesday, August 23 for customers traveling from McGhee Tyson airport in the next 24 hours.

Airline officials are urging customers to arrive at McGhee Tyson three hours prior to their scheduled departure times due to issues with a recent system update.

If you are traveling in the next 24 hours and are not able to check your flight information or access your boarding passes, Allegiant claims they will have a team member available for assistance at the ticket counter at the airport. The airline adds they will also waive all fees associated with printing boarding passes at the airport.

Additional information for Allegiant passengers including travel alerts can be found here.