Is it okay to include an upcoming position on your resume?

Hi there! I'm about to apply to a summer internship at an asset manager to help with equity research. I go to a target school, but my school has policy that all students attend school during the summer of their sophomore year. I'm currently a junior, so I just spent this past summer on campus with the rest of my class. This also meant that I couldn't intern anywhere this summer. However, I do have an internship this upcoming winter (everything about this internship has been confirmed, so it's a done deal) at another asset manager that will give me good experience.

I was wondering if it was okay to include a line about this internship on my resume under a "upcoming experience" section or something of the sort. I know it's work I haven't done yet, but I've had interviewers who don't know about my school's system ask me why I don't have any internships, so I feel as though including it in there will be important, especially because the internship is in asset management and a lot of the skills I'll learn over the winter will transfer over to the summer internship.

As long as I don't describe the internship too much and just state the position, firm, and time period, would it be okay to include this information? Any thoughts would be much appreciated. Thanks!