diff --git a/.travis.yml b/.travis.yml
index d557899..239290a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
+dist: xenial
 language: python
-sudo: false
-python: 3.3
-install: script/bootstrap
-script: script/test
+python:
+  - "3.5"
+install:
+  - script/bootstrap
+# command to run tests
+script:
+  - script/test