sidekiq_prometheus.gemspec in sidekiq_prometheus-0.8.1 vs sidekiq_prometheus.gemspec in sidekiq_prometheus-0.9.0

@@ -19,10 +19,10 @@
   end
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_development_dependency 'bundler', '~> 1.16'
+  spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'pry'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'rubocop', '~> 0.58.0'