diff --git a/endpoints/api/repository_models_interface.py b/endpoints/api/repository_models_interface.py
index ac54769d7..fe2ff563b 100644
--- a/endpoints/api/repository_models_interface.py
+++ b/endpoints/api/repository_models_interface.py
@@ -131,11 +131,10 @@ class Channel(namedtuple('Channel', ['name', 'linked_tag_name', 'linked_tag_life
 
 
 class Release(
-    namedtuple('Channel', ['name', 'released', 'lifetime_start', 'releases_channels_map'])):
+    namedtuple('Channel', ['name', 'lifetime_start', 'releases_channels_map'])):
   """
   Repository a single quay repository
   :type name: string
-  :type released: string
   :type last_modified: string
   :type releases_channels_map: {string -> string}
   """
diff --git a/endpoints/api/repository_models_pre_oci.py b/endpoints/api/repository_models_pre_oci.py
index d25ef432d..bac9215f3 100644
--- a/endpoints/api/repository_models_pre_oci.py
+++ b/endpoints/api/repository_models_pre_oci.py
@@ -149,7 +149,7 @@ class PreOCIModel(RepositoryDataInterface):
       releases_channels_map = defaultdict(list)
       return ApplicationRepository(
         base, [create_channel(channel, releases_channels_map) for channel in channels], [
-          Release(release.name, release.released, release.lifetime_start, releases_channels_map)
+          Release(release.name, release.lifetime_start, releases_channels_map)
           for release in releases
         ])