diff --git a/.travis.yml b/.travis.yml
index 3c84ec3c..d0219921 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
-sudo: false
 language: python
 sudo: required # needed for test_become
+dist: xenial
 python:
     - "2.7"
     - "3.6"