Commuters in Melbourne's east could face delays of more than an hour from Thursday.
Buses will replace trains from Richmond to Camberwell from 8:30pm on Thursday November 30 and run until the last service on Tuesday December 5.
It's all part of a $42 million upgrade to the line's power supply and infrastructure.
"Please note that this may increase your journey by up to 70 minutes," reads Metro's website.
To check out how your timetable will be affected head here.