diff --git a/tox.ini b/tox.ini
index afdb8a629..c81dd64d8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,8 +1,14 @@
 [tox]
-envlist = py25,py26,py27
+envlist = py26,py27
 
 [testenv]
-deps = nose
-       mock
-       mox
-commands = nosetests
+deps = -r{toxinidir}/tools/pip-requires
+commands = /bin/bash run_tests.sh -N
+
+[testenv:pep8]
+deps = pep8
+commands = /bin/bash run_tests.sh -N --pep8
+
+[testenv:coverage]
+deps = pep8
+commands = /bin/bash run_tests.sh -N --with-coverage