anyway_config.gemspec in anyway_config-1.4.1 vs anyway_config.gemspec in anyway_config-1.4.2

@@ -20,9 +20,10 @@
 
   s.files         = `git ls-files`.split($INPUT_RECORD_SEPARATOR)
   s.require_paths = ["lib"]
   s.required_ruby_version = '>= 2.3'
 
+  s.add_development_dependency "bundler", "~> 1.15"
   s.add_development_dependency "rspec", "~> 3.5"
   s.add_development_dependency "rubocop", "~> 0.60.0"
   s.add_development_dependency "simplecov", ">= 0.3.8"
 end