diff --git a/.travis.yml b/.travis.yml
index b6d0e00..fe990e5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,10 @@ python:
 - 2.7
 - 3.4
 - 3.5
-- pypy
+- 3.6
+- 3.7-dev
+- pypy2
+- pypy3
 before_install:
 - pip install nose coverage codecov
 - pip install -r requires/testing.txt