diff --git a/.travis.yml b/.travis.yml
index 12ace1f..768c02c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,9 @@
 language: python
 python:
+  - "3.5"
   - "3.6"
   - "3.7"
+dist:
+  - xenial
 install: pip install . && pip install -r dev-requirements.txt
 script: py.test