Dynamic Routing In Gatsby

Im currently running Ghost using a Gatsby client, I made some changes to routes.yaml and I can see those live in my ghost instance but they do not appear in my Gatsby client even after deploy.
How do I update routes.yaml for the Gatsby starter?

Dynamic Routing usually only integrates with the Ghost-generated Frontend. If you’re using a bring-your-own-frontend option, you usually need to define the routes on that platform.