No, it can have other ramifications as it can lead to fraudulent activity. So stripe doesn’t allow you to change an existing plan that way. The customer has to explicitly Agree to the change of price. The cleanest way to ensure this happens is to create a new subscription plan with a new price. Then anyone that purchase that will be on the new price. This also allows you to keep the existing customers in the older price (grandfather them in) which is generally how most people prefer to use it.