Is there a way to clear all view cache (re-run all documents)?

I want to clear all earlier map and reduce data for a design document. Can I do that without removing the design document and re-adding it? I want the design doc to re-run every document in the bucket. If I upsert the same design document it seems to keep the old cache.

This is a special use case where I change aggregation based on the current date. All documents have to be re-run on the first of the month.