ably.gemspec in ably-0.8.14 vs ably.gemspec in ably-0.8.15

@@ -35,10 +35,10 @@
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'redcarpet'
   spec.add_development_dependency 'rspec', '~> 3.2.0' # version lock, see config.around(:example, :event_machine) in event_machine_helper.rb
   spec.add_development_dependency 'rspec-retry'
   spec.add_development_dependency 'yard'
-  spec.add_development_dependency 'webmock'
+  spec.add_development_dependency 'webmock', '~> 2.3.0'
 
   spec.add_development_dependency 'coveralls'
 
   unless RUBY_VERSION.match(/^1/)
     spec.add_development_dependency 'pry'