diff --git a/requirements-test.txt b/requirements-test.txt
new file mode 100644
index 0000000..e004cf0
--- /dev/null
+++ b/requirements-test.txt
@@ -0,0 +1,2 @@
+py==1.4.26
+pytest==2.7.0
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..0663c0d
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,5 @@
+[tox]
+envlist = py27
+[testenv]
+deps = -rrequirements-test.txt
+commands = py.test --doctest-modules boltons