diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..def46e8
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,10 @@
+language: python
+python:
+  - "2.7"
+  - "3.6"
+  - "pypy"
+  - "pypy3"
+install:
+  - pip install tox-travis
+script:
+  - tox
diff --git a/setup.py b/setup.py
index ae11487..94014ff 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
       license='Apache 2.0',
       packages=["github_webhook"],
       install_requires=['flask', 'six'],
-      tests_require=['mock', 'nose'],
+      tests_require=['mock', 'pytest'],
 
       classifiers=[
           'Development Status :: 4 - Beta',
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/github_webhook/test_webhook.py b/tests/test_webhook.py
similarity index 75%
rename from github_webhook/test_webhook.py
rename to tests/test_webhook.py
index 4df373d..e22b710 100644
--- a/github_webhook/test_webhook.py
+++ b/tests/test_webhook.py
@@ -2,7 +2,6 @@
 
 from __future__ import print_function
 
-import unittest
 try:
     from unittest.mock import Mock
 except ImportError:
@@ -11,18 +10,19 @@
 from github_webhook.webhook import Webhook
 
 
-class TestWebhook(unittest.TestCase):
+def test_constructor():
+    # GIVEN
+    app = Mock()
 
-    def test_constructor(self):
-        # GIVEN
-        app = Mock()
+    # WHEN
+    webhook = Webhook(app)
 
-        # WHEN
-        webhook = Webhook(app)
-
-        # THEN
-        app.add_url_rule.assert_called_once_with(
-            '/postreceive', view_func=webhook._postreceive, methods=['POST'])
+    # THEN
+    app.add_url_rule.assert_called_once_with(
+        endpoint='/postreceive',
+        rule='/postreceive',
+        view_func=webhook._postreceive,
+        methods=['POST'])
 
 # -----------------------------------------------------------------------------
 # Copyright 2015 Bloomberg Finance L.P.
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..6d31e34
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,23 @@
+[tox]
+envlist = py27,py36,pypy,pypy3
+
+[testenv]
+deps =
+     pytest
+     flask
+     six
+commands = pytest -vl
+
+[testenv:py27]
+deps =
+     pytest
+     flask
+     six
+     mock
+
+[testenv:pypy]
+deps =
+     pytest
+     flask
+     six
+     mock
\ No newline at end of file