How do I cap electrical wires that are not longer in use?

I am trying to completely remove a dishwasher. I don't want to replace it, just remove it and convert the space to shelf space. The electrical is hardwired to the dishwasher. I already have the breaker off and it can stay off indefinitely. How do I cap the wire ends so it will be safe if someone accidentally turns the breaker back on and those go live? Should I just use wire nuts? Thanks