diff --git a/.travis.yml b/.travis.yml
index beaa2d0..5da1e5c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,8 @@
-sudo: false
+dist: xenial
+sudo: required
 language: python
 python:
   - "3.6"
+  - "3.7"
 install: pip install tox-travis
 script: tox