The patch is not patching version in json.gemspec, but it should ...
--- ext/json/json.gemspec
+++ ext/json/json.gemspec
@@ -1,6 +1,6 @@
Gem::Specification.new do |s|
s.name = "json"
- s.version = "1.8.3"
+ s.version = "1.8.3.1"
s.summary = "This json is bundled with Ruby"
s.executables = []
s.files = ["json.rb", "json/add/bigdecimal.rb", "json/add/complex.rb", "json/add/core.rb", "json/add/date.rb", "json/add/date_time.rb", "json/add/exception.rb", "json/add/ostruct.rb", "json/add/range.rb", "json/add/rational.rb", "json/add/regexp.rb", "json/add/struct.rb", "json/add/symbol.rb", "json/add/time.rb", "json/common.rb", "json/ext.rb", "json/ext/generator.bundle", "json/ext/parser.bundle", "json/generic_object.rb", "json/version.rb"]