MINNEAPOLIS (WCCO) — Minneapolis officials say some downtown parking pay stations are starting to come back online.

A total of 138 pay stations were affected overnight following a software update to the parking meter system, officials say. Currently, the machines are now displaying a message that says “loading parameter” and will not accept any payments.

As of 4 p.m., about 20 of the affected machines are back online.

Drivers will need to check their meters. If they are working, they will need to pay.

The areas affected include most of the downtown core, including an area bounded by Hennepin Avenue in the west to 5th Avenue South in the east. Pay stations were also affected on either side of Hennepin Avenue around Loring Park.

Crews will continue working until dark and will return at 7 a.m. Wednesday to repair the remaining machines.

Minneapolis operates 617 multi-space parking pay stations that accept payments for more than 6,000 metered parking spaces.