diff --git a/prez/dependencies.py b/prez/dependencies.py
index 561a99e9..8f454a48 100755
--- a/prez/dependencies.py
+++ b/prez/dependencies.py
@@ -599,6 +599,7 @@ async def check_unknown_params(request: Request):
         "filter",
         "order_by",
         "order_by_direction",
+        "subscription-key",
     }
     unknown_params = set(request.query_params.keys()) - known_params
     if unknown_params:
diff --git a/prez/models/query_params.py b/prez/models/query_params.py
index ac24fb0c..a5657d1c 100755
--- a/prez/models/query_params.py
+++ b/prez/models/query_params.py
@@ -160,6 +160,11 @@ def __init__(
             default=None,
             description="Optional: Order direction, must be 'ASC' or 'DESC'",
         ),
+        subscription_key: str = Query(
+            default=None,
+            description="An optional API Subscription key",
+            alias="subscription-key",
+        ),
     ):
         self.q = q
         self.page = page
@@ -172,6 +177,7 @@ def __init__(
         self.order_by_direction = order_by_direction
         self.filter = filter
         self.mediatype = mediatype
+        self.subscription_key = subscription_key
         self.validate_filter()
 
     def validate_filter(self):