diff --git a/tox.ini b/tox.ini
index 36061a2..52ab77c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,9 +6,6 @@ deps =
      pytest
      pytest-cov
      pyquery
-     numpy
 
-# scipy cannot be installed by pip if numpy is not totally installed before
 commands =
-    pip install scipy
     py.test [] --cov pygal pygal/test