diff --git a/readthedocs/projects/models.py b/readthedocs/projects/models.py
index f0986aedafe..cb4cb432dec 100644
--- a/readthedocs/projects/models.py
+++ b/readthedocs/projects/models.py
@@ -1696,6 +1696,10 @@ def add_features(sender, **kwargs):
             SKIP_SYNC_VERSIONS,
             _('Skip sync versions task'),
         ),
+        (
+            SYNC_VERSIONS_USING_A_TASK,
+            _('Sync versions using a task instead of the API'),
+        ),
 
         # Search related features.
         (