Switching from 24fps to 25fps

Hello and thank you in advance for your advice:

I came from FCP with a 25fps XML. I have graded the project and now upon rendering I saw that for some reason the timeline as well as the master session have been set up as 24pfs, thus the render dialogue only gives me a 24fps choice. Is there a way to change this? How would you go about solving this?

Many thanks,

Tobias