diff --git a/.travis.yml b/.travis.yml
index 29c3f67..e7dde2b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,8 @@ language: python
 python:
   - "2.6"
   - "2.7"
+  - "3.3"
+  - "pypy"
 
 install:
   - pip install . --quiet
diff --git a/tox.ini b/tox.ini
index 058f9c1..731b8ae 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27, py33
+envlist = py26, py27, py33, pypy
 
 [testenv]
 deps =