diff --git a/.travis.yml b/.travis.yml
index 8f491ae73..f461f48c9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
 jobs:
   include:
+    - os: linux
+      dist: xenial
+      language: python
+      python: "3.5"
     - os: linux
       dist: xenial
       language: python