.travis.yml in squid-1.4.0 vs .travis.yml in squid-1.4.1

@@ -2,9 +2,9 @@
 cache: bundler
 notifications:
   email: true
 matrix:
   include:
-  - rvm: 2.1.5
-    gemfile: gemfiles/Gemfile.activesupport-4.x
   - rvm: 2.2.4
+    gemfile: gemfiles/Gemfile.activesupport-4.x
+  - rvm: 2.4.1
     gemfile: gemfiles/Gemfile.activesupport-5.x