Updating line item price on variant price change

[br4m11]

Hey!
Currently in my Medusa V1 project when product variants have been added to a cart as line items, the line item price isn't being updated when I update the product variants price.
I cant seem to find a config or module for this. Is this something that is build in?
Or would i need to build some service myself for when i product variant is updates, to co over all carts line items and update prices?
Thanks!