diff --git a/tox.ini b/tox.ini
index 8e0656d5..878d1725 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,15 +22,19 @@ deps =
 deps =
 # for testing the typing module
     typing
+    {[testenv]deps}
 [testenv:py32]
 deps =
     typing
+    {[testenv]deps}
 [testenv:py33]
 deps =
     typing
+    {[testenv]deps}
 [testenv:py34]
 deps =
     typing
+    {[testenv]deps}
 [testenv:cov]
 deps =
     coverage