Document the fact that subunit needs testtools 0.9.6 or later.

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index b9d6c5a..2038d04 100755
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@ except ImportError:
 else:
     extra = {
         'install_requires': [
-            'testtools',
+            'testtools>=0.9.6',
         ]
     }