diff --git a/data/refdata/exchanges.cfg b/data/refdata/exchanges.cfg
index eb59244..8358e71 100644
--- a/data/refdata/exchanges.cfg
+++ b/data/refdata/exchanges.cfg
@@ -409,6 +409,7 @@
                         , "url": "https://api.coinbase.com/api/v3/brokerage/products"
                         , "params": {
                             "product_type": "FUTURE"
+                            "UNKNOWN_CONTRACT_EXPIRY_TYPE"
                             , "contract_expiry_type": "PERPETUAL" # "PERPETUAL" #
                             , "expiring_contract_status": "STATUS_UNEXPIRED"
                         }