diff --git a/.travis.yml b/.travis.yml
index 094f0de0..c54e8800 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ services:
 
 python:
   - '2.7'
+  - '3.5'
   - '3.6'
   - '3.7'
   - 'pypy3.5'