.travis.yml in acts_as_textcaptcha-4.5.0 vs .travis.yml in acts_as_textcaptcha-4.5.1

@@ -3,16 +3,32 @@
 script: 'bundle exec rake test'
 gemfile:
   - gemfiles/rails_3.gemfile
   - gemfiles/rails_4.gemfile
   - gemfiles/rails_5.gemfile
+  - gemfiles/rails_6.gemfile
 
 rvm:
-  - 2.3.8
-  - 2.4.6
-  - 2.5.5
-  - 2.6.3
+  - 2.4.9
+  - 2.5.7
+  - 2.6.5
+  - 2.7.0
   - ruby-head
+
+matrix:
+  allow_failures:
+    - rvm: ruby-head
+  exclude:
+    - rvm: 2.4.9
+      gemfile: gemfiles/rails_6.gemfile
+    - rvm: 2.7.0
+      gemfile: gemfiles/rails_3.gemfile
+    - rvm: 2.7.0
+      gemfile: gemfiles/rails_4.gemfile
+    - rvm: ruby-head
+      gemfile: gemfiles/rails_3.gemfile
+    - rvm: ruby-head
+      gemfile: gemfiles/rails_4.gemfile
 
 deploy:
   provider: rubygems
   api_key:
     secure: AUJy9JSNrNcJcZc6JQErh1LtmHrdQBk1W0DYVT0soyBEx5hbKKoIympmrlh9VcZxNpbLfbuCdxl2C0nWMembwx71tLytvM76BqoU2KKTxQQLju8SUAyzGQabkNHr0mzpUDQiC4L16c5k+voCkWtptGkxiVq6eDZExBSzDM8cVMk=