.travis.yml in acts_as_hashids-0.1.5 vs .travis.yml in acts_as_hashids-0.1.6

@@ -1,28 +1,34 @@
 language: ruby
 sudo: false
 rvm:
-  - 2.2.6
-  - 2.3.3
-  - 2.4.0
+  - 2.2
+  - 2.3
+  - 2.4
+  - 2.5
 env:
   -
   - ACTIVE_RECORD_VERSION=4.0.0
   - ACTIVE_RECORD_VERSION=4.1.0
   - ACTIVE_RECORD_VERSION=4.2.0
   - ACTIVE_RECORD_VERSION=5.0.0
 matrix:
   allow_failures:
-    - rvm: 2.4.0
+    - rvm: 2.4
       env: ACTIVE_RECORD_VERSION=4.0.0
-    - rvm: 2.4.0
+    - rvm: 2.4
       env: ACTIVE_RECORD_VERSION=4.1.0
-cache: bundler
+    - rvm: 2.5
+      env: ACTIVE_RECORD_VERSION=4.0.0
+    - rvm: 2.5
+      env: ACTIVE_RECORD_VERSION=4.1.0
 before_install:
   - gem update --system
   - gem --version
-  - gem update bundler
-  - bundler --version
+install:
+  - gem install bundler
+  - bundle --version
+  - bundle install --jobs=3 --retry=3
 script:
   - 'bundle exec rake'
 notifications:
   email: false