.travis.yml in unicode-emoji-1.1.0 vs .travis.yml in unicode-emoji-2.0.0

@@ -1,14 +1,15 @@
 sudo: false
 language: ruby
 
 rvm:
+- 2.6.1
+- 2.5.3
+- 2.4.5
+- 2.3.8
 - ruby-head
-- 2.5.1
-- 2.4.4
-- 2.3.7
 - jruby-head
-- jruby-9.1.16.0
+- jruby-9.2.6.0
 
 matrix:
   allow_failures:
     - rvm: jruby-head
     - rvm: ruby-head