diff --git a/.travis.yml b/.travis.yml
index 3ac221d..1dc7a7a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,5 +3,6 @@ python:
   - "2.6"
   - "2.7"
   - "3.2"
+  - "3.3"
   - "pypy"
 script: py.test -vv
diff --git a/README.rst b/README.rst
index 24e28e9..5c899df 100644
--- a/README.rst
+++ b/README.rst
@@ -20,6 +20,14 @@ use of ``Module`` s.
 While being inspired by Guice, it does not slavishly replicate its API.
 Providing a Pythonic API trumps faithfulness.
 
+Supported Python versions
+=========================
+
+Injector work with the following Python interpreters:
+
+* CPython 2.6, 2.7, 3.2, 3.3
+* PyPy 1.9
+
 A Full Example
 ==============
 Here's a full example to give you a taste of how Injector works::