.travis.yml in lolcommits-flowdock-0.1.0 vs .travis.yml in lolcommits-flowdock-0.1.1

@@ -4,14 +4,15 @@
 rvm:
  - 2.1.10
  - 2.2.9
  - 2.3.6
  - 2.4.3
- - 2.5.0
+ - 2.5.1
  - ruby-head
 
 before_install:
  - gem update --system
+ - gem install bundler
  - git --version
  - git config --global user.email "[e-mail]"
  - git config --global user.name "Lolcommits"
 
 matrix: