Fix travis CI failure

mbohlool · mbohlool · commit 967b4bfb22eb · 2017-07-06T16:52:45.000-07:00
diff --git 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:
