diff --git a/.travis.yml b/.travis.yml
index cd79bcf..e6e1b30 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,8 @@ matrix:
   include:
     - env: TOXENV=py35
       python: "3.5"
+    - env: TOXENV=py
+      python: "nightly"
 env:
   - TOXENV=py27
   - TOXENV=py34