updated

Author: zopyx

.travis.yml

@@ -1,15 +1,26 @@
-language: python
-sudo: false
-
 cache: pip
 
 services:
   - docker
 
-python:
-  - "2.7"
-  - "3.5"
-  - "3.6"
+language: python
+dist: trusty
+sudo: required
+matrix:
+  include:
+    - os: linux
+      dist: trusty
+      python: 2.7
+    - os: linux
+      dist: trusty
+      python: 3.5
+    - os: linux
+      dist: trusty
+      python: 3.6
+    - os: linux
+      dist: xenial
+      python: 3.7
+
 
 before_install:
   # Pull docker images early for a more responsive nosetests run