1 files changed, 1 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index 78787ed06..c516d744d 100644
--- a/setup.py
+++ b/setup.py
@@ -105,6 +105,7 @@ case second `m'.  Any other spelling is incorrect.""",
         'mock',
         'nose2',
         'passlib',
+        'six',
         'sqlalchemy',
         'zope.component',
         'zope.configuration',