.travis.yml in rack-app-7.5.2 vs .travis.yml in rack-app-7.6.0

@@ -4,19 +4,17 @@
 install:
   - gem update bundler
   - bundle install
 
 rvm:
-  - 1.9
-  - 2.0.0
-  - 2.1.1
-  - 2.1.2
-  - 2.2.2
-  - 2.3.1
-  - jruby-19mode
-
   - ruby-head
   - jruby-head
+  - jruby-19mode
+  - 1.9
+  - 2.3.8
+  - 2.4.6
+  - 2.5.5
+  - 2.6.3
 
 matrix:
   allow_failures:
     - rvm: ruby-head
     - rvm: jruby-head