Duplicate Deal Id in recents endpoint

I have duplicate when i call the endpoint with pagination.
Call 1 : /v1/recents?start=0&limit=100&since_timestamp=2019-12-31 23:59:59&items=deal
Call 2 : /v1/recents?start=100&limit=100&since_timestamp=2019-12-31 23:59:59&items=deal

Some deals are in the response of the call 1 and the call 2, with exactly the same properties.
It leads to some problems in my extraction logic because of duplicate violations in my destination.