circle.yml in pheme-0.0.3 vs circle.yml in pheme-0.0.4

@@ -1,9 +1,13 @@
+machine:
+  ruby:
+    version: 2.2.2
 dependencies:
   override:
-    - 'rvm-exec 2.1.0 bundle install'
+    - 'rvm-exec 2.2.2 bundle install'
     - 'rvm-exec 2.3.0 bundle install'
-
+  post:
+    - bundle exec bundle-audit update && bundle exec bundle-audit check
 test:
   override:
-    - 'rvm-exec 2.1.0 bundle exec rspec'
+    - 'rvm-exec 2.2.2 bundle exec rspec'
     - 'rvm-exec 2.3.0 bundle exec rspec'