Changing Category Display Minimum Posts

Does anyone know how to change the minimum number of posts required to have a category display? The minimum is normally to require one post assigned to the category before it will display, but I want to change that.

I want to increase the number of posts that need to be assigned to a category before it will display live in the category list. This will help me ensure that the categories have a good amount of content in them before they are made live.

Thanks.