diff --git a/circle.yml b/circle.yml
index c9b1357..842f913 100644
--- a/circle.yml
+++ b/circle.yml
@@ -2,3 +2,7 @@ dependencies:
     override:
         - pip install tox tox-pyenv
         - pyenv local 2.7.9 3.2.5 3.3.3 3.4.0 3.5.0
+
+test:
+    override:
+        - tox