webmock 2.3.2+ for Ruby 2.4+

Author: xinranxiao

protip.gemspec

@@ -28,5 +28,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'simplecov', '~> 0.10'
   spec.add_development_dependency 'pry', '~> 0.10'
-  spec.add_development_dependency 'webmock', '~> 1.20'
+  spec.add_development_dependency 'webmock', '~> 3.3.0'
 end