update bundler before running CI

stve · stve · commit 641e913d24de · 2017-02-15T10:11:47.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -19,6 +19,7 @@ bundler_args: --without development --retry=3 --jobs=3
 
 before_install:
   - gem update --system
+  - gem update bundler
 
 env:
   global:
