diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..eacfc44
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,20 @@
+[tox]
+envlist = py26,py27,py33,py34,pypy
+indexserver =
+	default = https://warehouse.python.org/simple
+
+[testenv]
+commands = nosetests tests
+deps =
+	-rtest-requirements.txt
+	tox
+
+[testenv:py27]
+deps =
+	{[testenv]deps}
+	mock
+
+[testenv:py26]
+deps =
+	{[testenv:py27]deps}
+	unittest2