.travis.yml in email_inquire-0.10.0 vs .travis.yml in email_inquire-0.11.0

@@ -6,11 +6,12 @@
 bundler_args: --without local
 dist: trusty
 language: ruby
 rvm:
   - 2.3.8
-  - 2.4.5
-  - 2.5.3
-  - 2.6.0
+  - 2.4.9
+  - 2.5.7
+  - 2.6.5
+  - 2.7.0
 script:
   - bundle exec rake ci
 sudo: false