diff --git a/tox.ini b/tox.ini
index d5530ba93662..25aa62a8ad23 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = py{34,27},functional,pep8,pip-missing-reqs
+envlist = py{35,34,27},functional,pep8,pip-missing-reqs
 skipsdist = True
 
 [testenv]
@@ -20,13 +20,25 @@ deps = -r{toxinidir}/test-requirements.txt
 # other way around. See: https://bugs.launchpad.net/testrepository/+bug/1212909
 commands =
   find . -type f -name "*.pyc" -delete
-  py27: bash tools/pretty_tox.sh '{posargs}'
-  py34: bash tools/pretty_tox3.sh '{posargs}'
-  py35: bash tools/pretty_tox3.sh '{posargs}'
 passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY OS_DEBUG GENERATE_HASHES
 # there is also secret magic in pretty_tox.sh which lets you run in a fail only
 # mode. To do this define the TRACE_FAILONLY environmental variable.
 
+[testenv:py27]
+commands =
+    {[testenv]commands}
+    bash tools/pretty_tox.sh '{posargs}'
+
+[testenv:py34]
+commands =
+    {[testenv]commands}
+    bash tools/pretty_tox3.sh '{posargs}'
+
+[testenv:py35]
+commands =
+    {[testenv]commands}
+    bash tools/pretty_tox3.sh '{posargs}'
+
 [testenv:pep8]
 basepython = python2.7
 deps = hacking