.travis.yml in spy-1.0.0 vs .travis.yml in spy-1.0.1

@@ -1,11 +1,13 @@
 language: ruby
 rvm:
-  - 2.1.0
-  - 2.5.1
+  - '2.1'
+  - '2.5'
+  - '2.7'
   - jruby
   - ruby-head
   - rbx-3
 matrix:
   allow_failures:
       - rvm: ruby-head
       - rvm: rbx-3
+      - rvm: jruby