In response to the surge in online shopping in the days after Thanksgiving, United Parcel Service Inc. told its drivers to halt picking up new packages from six retailers including Nike and L.L.Bean, the Wall Street Journal reported Wednesday morning.

UPS and other carriers like FedEx and USPS are all stretched thin this year as e-commerce exploded in growth in the wake of the pandemic, during which consumers have avoided in-person shopping.

“UPS continues to work closely with our largest customers to steer volume to capacity and ensure the UPS network is reliable for all customers,” the parcel service told BoF in an email statement. “This collaboration includes specific capacity allocations last weekend and throughout the holiday season.”

It added that it will work with its retailer clients to pick up the turned away packages once capacity eases.

Online sales increased 44 percent over the five-day period between Thanksgiving and Cyber Monday, according to the National Retail Federation.