.travis.yml in parse_gemspec-0.5.0 vs .travis.yml in parse_gemspec-1.0.0

@@ -1,9 +1,11 @@
 language: "ruby"
 rvm:
-  - "2.0"
-  - "2.1"
-  - "2.2"
+  - "2.0.0"
+  - "2.1.10"
+  - "2.2.6"
+  - "2.3.3"
+  - "2.4.0"
   - "ruby-head"
 matrix:
   allow_failures:
     - rvm: "ruby-head"
 before_install: