Is there an event that you can trap after a workbook has been saved?

My issue is this: I have some objects in a collection indexed by workbook
name, thus each object in the collection is associated with a particular
workbook. When the user changes the name of the workbook (by Save As...)
the keys need to be updated. I have written the code to do the updating,
including getting the previous name (via the BeforeSave event) but no event
to trigger it on.

Stewart