diff --git a/tox.ini b/tox.ini
index 06593b91..d346be97 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,6 +5,8 @@ deps =
     https://bitbucket.org/hpk42/pytest/get/c4f58165e0d4.zip
 # docopt for sith doctests
     docopt
+# coloroma for colored debug output
+    colorama
 commands =
     py.test []
 [testenv:py26]