1 files changed, 1 insertions, 0 deletions

diff --git a/setup.cfg b/setup.cfg
index 1830e9d..36638f6 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,6 +20,7 @@ classifier =
 
 [extras]
 test =
+    six
     docutils
     fixtures
     testtools