diff --git a/nailgun/entities.py b/nailgun/entities.py
index 54205590..d48f8b82 100644
--- a/nailgun/entities.py
+++ b/nailgun/entities.py
@@ -5421,6 +5421,7 @@ def __init__(self, server_config=None, **kwargs):
             'organization': entity_fields.OneToManyField(Organization),
             'location': entity_fields.OneToManyField(Location),
             'cacert': entity_fields.StringField(),
+            'default_content_http_proxy': entity_fields.BooleanField(),
         }
         self._meta = {'api_path': 'api/v2/http_proxies'}
         super().__init__(server_config=server_config, **kwargs)