.travis.yml in hash_ext-0.5.0 vs .travis.yml in hash_ext-0.6.0

@@ -3,23 +3,19 @@
 rvm:
   - 1.9.3
   - 2.0
   - 2.1
   - 2.2
-  - 2.3.0
-  - 2.4.0
-  - 2.5.0
-  - 2.6.0
-  - jruby-1.7.25
-  - jruby-9.1.7.0
+  - 2.3
+  - 2.4
+  - 2.5
+  - 2.6
+  - 2.7
+  - jruby-9.2.9.0
   - ruby-head
   - jruby-head
 
 matrix:
   fast_finish: true
   allow_failures:
     - rvm: ruby-head
-    - rvm: jruby-head
-
-before_install:
-  - rvm all-gemsets do gem uninstall bundler -ax || true
-  - gem install bundler -v "< 2"
+    - rvm: jruby-head
\ No newline at end of file