1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 8930062..9590ab4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,8 +10,8 @@ envlist = py26, py27, pypy, py33, py34, py35
 commands =
     py.test
 deps =
+    .[tool,signatures]
     jsonschema
     pytest
     pytest-cov
-    wheel[tool,signatures]
     setuptools>3.0