small fix to support Py 3.7

mpibpc-mroose · mpibpc-mroose · commit 3468be7d481c · 2018-08-29T15:23:50.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,5 +3,7 @@ python:
   - 3.5
   - 3.6
   - 3.7
+dist: xenial
+sudo: true
 install: pip install -U tox-travis
 script: tox
