.travis.yml in braid-1.1.2 vs .travis.yml in braid-1.1.3

@@ -1,16 +1,15 @@
 language: ruby
-sudo: false
 rvm:
-  - 2.3.1
-  - jruby-19mode
+  - 2.3.8
+  - 2.4.6
+  - 2.5.5
+  - 2.6.2
+  - jruby-9.2.6.0
 addons:
   apt:
     sources:
     - git-core
     packages:
     - git
 git:
   depth: 10
-before_install:
-  - git --version
-  - gem update bundler