.travis.yml in parse_fasta-2.4.0 vs .travis.yml in parse_fasta-2.4.1

@@ -1,11 +1,13 @@
 language: ruby
 cache: bundler
 
 rvm:
-  - 2.0
   - 2.1
   - 2.2
+  - 2.3
+  - 2.4
+  - 2.5
   
 script: 'bundle exec rake'
 
 notifications:
   email:
\ No newline at end of file