5.0.gemfile in uniqueness-1.1.0

- old
+ new

@@ -1,7 +1,8 @@
 # This file was generated by Appraisal
 
 source "https://rubygems.org"
 
+gem "bundler", "~> 2.0"
 gem "rails", "~> 5.0.0"
 
 gemspec path: "../"