1 files changed, 1 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index 80e3ca0..774d9d3 100644
--- a/setup.py
+++ b/setup.py
@@ -104,6 +104,7 @@ setup(name='zope.pagetemplate',
           untrusted=['zope.untrustedpython'],
       ),
       install_requires=['setuptools',
+                        'six',
                         'zope.interface',
                         'zope.component',
                         'zope.tales',