diff --git a/awx/api/serializers.py b/awx/api/serializers.py
index 6a34747518..5af82c063f 100644
--- a/awx/api/serializers.py
+++ b/awx/api/serializers.py
@@ -5495,6 +5495,7 @@ class ReceptorAddressSerializer(BaseSerializer):
             'url',
             'address',
             'port',
+            'protocol',
             'websocket_path',
             'is_internal',
             'canonical',