diff --git a/.travis.yml b/.travis.yml
index d0ecbf1a..3630e6e7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@ cache: pip
 
 language: python
 python:
+  - "3.5"
   - "3.6"
 
 services: