Blog custom style cached?

I created a new blog on my instance (I’m self-hosting), and did some initial tweaks using the custom CSS (in blogs → customize). Now I’ve made some changes to that CSS after publishing the first entry, and it looks fine when I’m logged-in and go to “view blog” - but in a private browser window, I still get the unfinished CSS from before I published the first entry.

I’m assuming this is cached somewhere, but it’s certainly not in my browser. And I’m not doing any caching in my nginx, so .. what do I do? Right now my entry looks “presentable” as long as I view it logged-in, but to a visitor it looks pretty crappy :-/

Halp?

Never mind. I shot myself in the foot, it seems. Sorry about the noise.