diff --git a/.travis.yml b/.travis.yml
index 3db70d3..f34bd25 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,8 @@ after_success:
   - pip install codecov
   - codecov
 cache: pip
+env:
+  TOXENV: py
 
 jobs:
   include: