This disclosure describes systems and methods for automatically verifying stored item dimension values and package utilization at packing. In some implementations, an image(s) of a package that includes items of a shipment set is captured at a pack station and analyzed to determine an actual package utilization. The actual package utilization is compared to an expected package utilization. If a difference between the expected package utilization and the actual package utilization is identified, it may be determined that the stored item dimension values may be inaccurate.