.travis.yml in avromatic-2.2.3 vs .travis.yml in avromatic-2.2.4

@@ -1,23 +1,16 @@
 language: ruby
 rvm:
-  - 2.6.3
-  - 2.5.5
-  - 2.4.6
+  - 2.5.8
+  - 2.6.6
+  - 2.7.1
 before_script:
   - bundle exec rubocop
 gemfile:
-  - gemfiles/rails5_0.gemfile
-  - gemfiles/rails5_1.gemfile
-  - gemfiles/rails5_2.gemfile
-  - gemfiles/rails6_0.gemfile
-  - gemfiles/avro_patches_rails5_0.gemfile
-  - gemfiles/avro_patches_rails5_1.gemfile
+  - gemfiles/avro1_8_rails5_2.gemfile
+  - gemfiles/avro1_9_rails5_2.gemfile
+  - gemfiles/avro1_10_rails5_2.gemfile
+  - gemfiles/avro1_9_rails6_0.gemfile
+  - gemfiles/avro1_10_rails6_0.gemfile
   - gemfiles/avro_patches_rails5_2.gemfile
   - gemfiles/avro_patches_rails6_0.gemfile
 script: bundle exec rspec
-matrix:
-  exclude:
-  - rvm: 2.4.6
-    gemfile: gemfiles/rails6_0.gemfile
-  - rvm: 2.4.6
-    gemfile: gemfiles/avro_patches_rails6_0.gemfile