.travis.yml in unicode-blocks-1.4.0 vs .travis.yml in unicode-blocks-1.5.0

@@ -3,13 +3,13 @@
 
 script: bundle exec ruby spec/unicode_blocks_spec.rb
 
 rvm:
 - ruby-head
-- 2.6.1
-- 2.5.3
-- 2.4.5
-- 2.3.8
+- 2.6
+- 2.5
+- 2.4
+- 2.3
 - 2.2
 - 2.1
 - 2.0
 - jruby-head
 - jruby-9.2.6.0