diff --git a/.travis.yml b/.travis.yml
index e3b881d..57e7833 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,9 @@ python:
   - "3.7"
   - "3.6"
   - "3.5"
+  - "pypy3.5"
   - "2.7"
+  - "pypy2.7"
 
 before_install:
   - sudo apt-get install -y git mercurial