How do I add more roster spots?

[nivshah]

Why does it say I have 41 roster spots? (SOLVED)

Not done drafting yet, but adding players to my league once a day from Couchmanagers slow auction. When I was checking out my team it said I had a roster of 40 out of 41. When I checked out other teams it says some of them have a roster of 40 and others 41. What is the reason for this?