Those are leather boots and they will adjust to your feet eventually. The question remaining, will it be you to give up, before the boots give in?
Cobblers and good shoemakers have a device that can expand a boot on some single spots by a tiny amount, which most likely would solve your specific issue.
If you don't have access to such, it might also help if you grease the boots properly, stuff them with newspaper and put them to store in a warm place, trying to expand the sore spots yourself.