diff --git a/.travis.yml b/.travis.yml
index 771e716..9eb7762 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,10 @@ rvm:
   - 2.2.9
   - jruby-9.1.14.0
 
+before_install:
+  - gem update --system
+  - gem install bundler
+
 gemfile:
   - gemfiles/rails_5_1.gemfile
   - gemfiles/rails_5_0.gemfile