hash_ext.gemspec in hash_ext-0.5.0 vs hash_ext.gemspec in hash_ext-0.6.0

@@ -17,10 +17,9 @@
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_development_dependency 'bundler', '~> 1.12'
   spec.add_development_dependency 'rake', '~> 11.0'
   spec.add_development_dependency 'minitest', '~> 5.0', '< 5.11'
   spec.add_development_dependency 'minitest-colorin', '~> 0.1'
   spec.add_development_dependency 'minitest-line', '~> 0.6'
   spec.add_development_dependency 'simplecov', '~> 0.14'