.travis.yml in server_sent_events-0.1.2 vs .travis.yml in server_sent_events-0.1.3

@@ -1,10 +1,10 @@
 sudo: false
 language: ruby
 cache: bundler
 
 rvm:
-  - 2.4.3
+  - 2.6
 
 branches:
   only:
     - master
     - "/^\\d+\\.\\d+(\\.\\d+)?(-\\S*)?$/"