.travis.yml in pg_objects-0.5.12 vs .travis.yml in pg_objects-0.5.13

@@ -1,10 +1,10 @@
 language: ruby
 rvm:
-  - 2.5.9
-  - 2.6.7
-  - 2.7.3
-  - 3.0.1
+  - 2.6.10
+  - 2.7.6
+  - 3.0.4
+  - 3.1.2
 before_install: gem install bundler -v 1.16.2
 script:
  - bundle exec rspec spec
  - bundle exec rubocop