.travis.yml in prometheus_exporter-0.3.1 vs .travis.yml in prometheus_exporter-0.3.3

@@ -1,6 +1,7 @@
-sudo: false
+sudo: required
 language: ruby
+dist: trusty
 rvm:
   - 2.5.0
 before_install: gem install bundler -v 1.16.1
 before_script: sudo sh -c 'echo 0 > /proc/sys/net/ipv6/conf/all/disable_ipv6'