.travis.yml in ridgepole-0.8.0.rc1 vs .travis.yml in ridgepole-0.8.0.rc2

@@ -4,14 +4,13 @@
 language: ruby
 cache:
   - bundler
   - apt
 rvm:
-  - 2.3.8
-  - 2.4.5
-  - 2.5.3
-  - 2.6.0
+  - 2.4.6
+  - 2.5.5
+  - 2.6.3
 before_script:
   - sudo service mysql stop
   - sudo service postgresql stop
   - for i in {1..60}; do docker-compose up -d && break; sleep 1; done
   - function mysql_ping { mysqladmin -u root -h 127.0.0.1 -P 13316 -ppassword ping; }
@@ -42,7 +41,7 @@
       - postgresql-client-9.4
 matrix:
   exclude:
     - rvm: 2.3.8
       gemfile: gemfiles/activerecord_6.0.gemfile
-    - rvm: 2.4.5
+    - rvm: 2.4.6
       gemfile: gemfiles/activerecord_6.0.gemfile