.travis.yml in blurb-0.3.2 vs .travis.yml in blurb-0.4.0

@@ -1,5 +1,5 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.4.4
-before_install: gem install bundler -v 1.14.6
+  - 2.6.2
+before_install: gem install bundler -v 2.0.2