No! Emphatically, NO! As Scrum Master, you should not be updating the burn charts.

“Why not?”, you ask.

“Isn't my job to help the team? Besides, updating the burn charts is in my job description.”

If this situation seems familiar, you're not alone. The vast majority of Scrum Masters are expected to do things that are antithetical to the role.

Yes, you might find yourself teaching your team some techniques for tracking their progress like a burn chart. Heck, you might even find yourself modeling how to track, but make no mistake, it is not your job to track the team's progress.