diff --git a/django/db/models/query.py b/django/db/models/query.py
index e1e2bb19f2..3696181a5c 100644
--- a/django/db/models/query.py
+++ b/django/db/models/query.py
@@ -284,6 +284,7 @@ class QuerySet(object):
         query = self.query.clone(sql.UpdateQuery)
         query.add_update_values(kwargs)
         query.execute_sql(None)
+        transaction.commit_unless_managed()
         self._result_cache = None
     update.alters_data = True