diff --git a/.travis.yml b/.travis.yml
index 83bdcc4..a3ce728 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,9 +3,13 @@
 language: python
 
 python:
-  - "3.5"
-  - "3.4"
   - "2.7"
+  - "3.3"
+  - "3.4"
+  - "3.5"
+  - "3.6"
+  - "pypy"
+  - "pypy3"
 
 before_install:
   - pip install codecov