diff --git a/readthedocs/projects/tasks/mixins.py b/readthedocs/projects/tasks/mixins.py
index b25c58d3555..5022d6a44ad 100644
--- a/readthedocs/projects/tasks/mixins.py
+++ b/readthedocs/projects/tasks/mixins.py
@@ -78,7 +78,7 @@ def sync_versions(self, vcs_repository):
         if use_lsremote:
             branches, tags = vcs_repository.lsremote(
                 include_tags=sync_tags,
-                include_branches_data=sync_branches,
+                include_branches=sync_branches,
             )
         else:
             if sync_tags: