diff --git a/.travis.yml b/.travis.yml
index c500cbe4..de7e6435 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,5 +5,6 @@ python:
   - "3.5"
   - "3.6"
   - "pypy"
+  - "pypy3"
 install: python setup.py install
 script:  python setup.py test