.travis.yml in acts_as_hashids-0.1.1 vs .travis.yml in acts_as_hashids-0.1.2

@@ -1,10 +1,15 @@
 language: ruby
 sudo: required
 rvm:
-  - 2.1
   - 2.2
   - 2.3.0
+env:
+  -
+  - ACTIVE_RECORD_VERSION=4.0
+  - ACTIVE_RECORD_VERSION=4.1
+  - ACTIVE_RECORD_VERSION=4.2
+  - ACTIVE_RECORD_VERSION=5.0.0.beta4
 cache: bundler
 install:
   - 'gem install bundler'
   - 'bundle install --jobs=3 --retry=3'
 script: