.travis.yml in fresh_connection-2.4.4 vs .travis.yml in fresh_connection-3.0.0.rc1

@@ -12,14 +12,14 @@
   - psql -c 'create database fresh_connection_test_replica2;' -U postgres
 cache: bundler
 rvm:
   - 2.2.9
   - 2.3.6
-  - 2.4.3
-  - 2.5.0
+  - 2.4.4
+  - 2.5.1
 gemfile:
-  - gemfiles/rails42.gemfile
   - gemfiles/rails50.gemfile
   - gemfiles/rails51.gemfile
+  - gemfiles/rails52.gemfile
 matrix:
   fast_finish: true
 bundler_args: --jobs 3 --retry 3