update rubygems before running tests on CI

This is recommended for the rainbow gem (rubocop dependency) See: ku1ik/rainbow#44 (comment)
sferik · Feb 15, 2017 · 2d95a25 · 2d95a25
1 parent 58a0014
commit 2d95a25
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -17,6 +17,9 @@ sudo: false
 
 bundler_args: --without development --retry=3 --jobs=3
 
+before_install:
+  - gem update --system
+
 env:
   global:
     - JRUBY_OPTS="$JRUBY_OPTS --debug"