diff --git a/.gitignore b/.gitignore
index 0d20b64..4141e94 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 *.pyc
+.tox
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..be64dab
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,13 @@
+# Tox (http://tox.testrun.org/) is a tool for running tests
+# in multiple virtualenvs. This configuration file will run the
+# test suite on all supported python versions. To use it, "pip install tox"
+# and then run "tox" from this directory.
+
+[tox]
+envlist = py26, py27, pypy
+
+[testenv]
+commands =
+    python test.py
+deps =
+    PyYAML