diff --git a/.travis.yml b/.travis.yml
index ad0ab0d..d7ab332 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,8 @@ python:
   - "2.7"
   - "3.5"
   - "3.6"
+  - "pypy"
+  - "pypy3"
 
 install:
   - pip install -r requirements.txt