As HubSpot Solutions Partners, we are fully versed on all the latest HubSpot updates. So don't worry, we will sort that for you.
We will update the integration to account for updates to the HubSpot API at no charge. If the changes are required due to changes to your HubSpot licences (i.e you downgrade your licence that mens the integration doesn't work as it should) these would be charged at £75 per hour. Changes required due to you third party system would be charged at £75 per hour.