On Friday, October 3rd 2021, the USPS implemented a set of seasonal  rates. This rate change will be revert to the pre-October 3rd rates on  December 26th.

For more information on the rate changes themselves, visit this page to read more. These improvements add onto the previous software version, 3.9.574.0.

New Features and Improvements
Updated all rates in the database tables to reflect the October 2021 rates 

Resolved Issues
Resolved conflict in billing methodology between First Class and Priority Mail 
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