diff --git a/.travis.yml b/.travis.yml
index e480a71024..58ebe8deb1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: python
 python:
-    - 3.5
+    - 3.3
 
 before_install:
     - pip install pep8