Merge pull request #645 from ruby/bump-versions-travis

Bump versions on Travis CI

Author: hsbt

.travis.yml

@@ -4,16 +4,17 @@ before_install:
   - gem update bundler
 language: ruby
 rvm:
-  - 2.2.9
-  - 2.3.6
-  - 2.4.3
-  - 2.5.0
+  - 2.3.7
+  - 2.4.4
+  - 2.5.1
   - ruby-head
   - jruby-9.1.17.0
+  - jruby-9.2.0.0
 env:
   global:
     NOBENCHMARK=1
 script: rake
 matrix:
   allow_failures:
     - rvm: jruby-9.1.17.0
+    - rvm: jruby-9.2.0.0