.travis.yml in gush-2.0.1 vs .travis.yml in gush-2.0.2

@@ -2,9 +2,12 @@
 script: "bundle exec rspec"
 rvm:
   - 2.2.2
   - 2.3.4
   - 2.4.1
+  - 2.5
+  - 2.6
+  - 2.7
 services:
   - redis-server
 email:
   recipients:
     - [e-mail]