diff --git a/mercurial/demandimport.py b/mercurial/demandimport.py
--- a/mercurial/demandimport.py
+++ b/mercurial/demandimport.py
@@ -145,6 +145,7 @@ def _demandimport(name, globals=None, lo
         return mod
 
 ignore = [
+    '__future__',
     '_hashlib',
     '_xmlplus',
     'fcntl',