diff --git a/.travis.yml b/.travis.yml
index c89db0d8..887d6647 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,6 @@
 # ref: https://docs.travis-ci.com/user/languages/python
 language: python
+dist: trusty
 sudo: required
 
 matrix: