Door hinge pin keeps coming up. How to solve?

Looking for help in solving a problem where the lower door hinge pin on my entry door keeps creeping up and causing the deadbolt to become slightly misaligned making it more difficult to lock. Reading online, I keep coming across suggestions of tightening a screw that’s supposed to lock the pin in place but my hinges don’t seem to have that screw.

Anyone have any other ideas on how to fix this problem?