diff --git a/tox.ini b/tox.ini
index 657cde3e55..737781ad03 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,9 @@
 [tox]
-envlist = py27,py34,py35,pypy,py27-nodeps,py34-nodeps,py35-nodeps,py27-jenkins,py34-jenkins,py35-jenkins
+envlist =
+    py{27,34,35}
+    pypy
+    py{27,34,35}-nodeps
+    py{27,34,35}-jenkins
 
 [testenv]
 ; simplify numpy installation