switch to max threads one - we are not thread safe
switch to max threads one - we are not thread safe

Signed-off-by: Andi Studer <da3644e9b28f42f78599d2f727c41a08b714a603@fundingcircle.com>

FundingCircle/shipment_tracker,iainbeeston/shipment_tracker,FundingCircle/shipment_tracker,FundingCircle/shipment_tracker,iainbeeston/shipment_tracker,FundingCircle/shipment_tracker,iainbeeston/shipment_tracker,iainbeeston/shipment_tracker