packetgen.gemspec in packetgen-2.1.1 vs packetgen.gemspec in packetgen-2.1.2

@@ -19,14 +19,13 @@
   end
   spec.bindir        = 'bin'
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = '>= 2.1.0'
+  spec.required_ruby_version = '>= 2.2.0'
 
   spec.add_dependency 'pcaprub', '~>0.12.4'
   spec.add_dependency 'network_interface'
-  spec.add_dependency 'net-proto', '~>1.2'
   spec.add_dependency 'rasn1', '~>0.3', '>= 0.3.1'
 
   spec.add_development_dependency 'bundler', '~> 1.7'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.0'