diff --git a/.travis.yml b/.travis.yml
index 09bef98..3a85bbb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,4 +3,5 @@ python:
   - "2.7"
   - "3.3"
   - "3.4"
+  - "pypy"
 script: sh test.sh