Fix $ bundle compilation error in Ruby 2.3 and 2.4

See ku1ik/rainbow#48
patrickm68 · Jan 22, 2017 · d902851 · d902851
1 parent 20ffd60
commit d902851
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -11,6 +11,7 @@ rvm:
   - jruby-9.1.0.0
 
 before_install:
+  - gem update --system
   - gem install bundler
 
 cache: