diff --git a/accounts/api.py b/accounts/api.py
index 242ffbc..959522d 100644
--- a/accounts/api.py
+++ b/accounts/api.py
@@ -431,7 +431,7 @@ def get(self, request: Request, *args, **kwargs):
                 {"message": f"Account with ID {account_id} not found."}, status=404
             )
 
-        registrations = ListRegistration.objects.filter(registrant=account)
+        registrations = ListRegistration.objects.filter(registrant=account).select_related('registered_by', 'registrant')
         status_param = request.query_params.get("status")
         if status_param:
             if status_param not in ListRegistrationStatus.values:
diff --git a/lists/serializers.py b/lists/serializers.py
index c920c17..210d02a 100644
--- a/lists/serializers.py
+++ b/lists/serializers.py
@@ -48,6 +48,7 @@ class Meta:
         model = ListRegistration
         fields = [
             "id",
+            "list_id",
             "registrant",
             "registered_by",
             "status",