diff --git a/.travis.yml b/.travis.yml
index ca1e737..84a6aa3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,7 @@ python:
     - "3.4"
     - "3.5"
     - "pypy"
+    - "pypy3"
 install:
     - python bootstrap.py
     - bin/buildout