diff --git a/.travis.yml b/.travis.yml
index 7cf7f58..1c1efc3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,10 @@ language: python
 python:
     - 2.7
 
+before_install:
+    - sudo apt-get update -qq -y
+    - sudo apt-get install python3.4
+
 install:
     - pip install tox cython
     - cython --cplus msgpack/_packer.pyx msgpack/_unpacker.pyx
diff --git a/tox.ini b/tox.ini
index 2413630..13d6b8d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26,py27,py32,py33,pypy
+envlist = py26,py27,py32,py33,py34,pypy
 
 [testenv]
 deps=