How to update portfolio slug?

Portfolio post type adds URL prefix for all portfolio items (mysite.com/dima-portfolio/your-item-name) and this can be updated in Theme Customize: Before After To update portfolio items post type prefix follow these steps: Theme Customize > Portfolio > Base portfolio options. Enter your portfolio prefix in Portfolio URL Slug field. Click Publish button to save the options. Flushing rewrite rules is required when you change these settings