```ruby
# coding: utf-8
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'liquid/c/version'

Gem::Specification.new do |spec|
  spec.name          = "liquid-c"
  spec.version       = Liquid::C::VERSION
  spec.authors       = ["Justin Li", "Dylan Thacker-Smith"]
  spec.email         = ["jli@shopify.com", "Dylan.Smith@shopify.com"]
  spec.summary       = "Liquid performance extension in C"
  spec.homepage      = ""
  spec.license       = "MIT"

  spec.extensions    = ['ext/liquid_c/extconf.rb']
  spec.files         = `git ls-files -z`.split("\x0")
  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
  spec.require_paths = ["lib"]

  spec.add_dependency 'liquid', '>= 3.0.0'

  spec.add_development_dependency "bundler", "~> 1.5"
  spec.add_development_dependency "rake"
  spec.add_development_dependency 'rake-compiler'
  spec.add_development_dependency 'minitest'
  spec.add_development_dependency 'stackprof' if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("2.1.0")
end
```

Use gems@shopify.com email address in gemspec
user
```ruby
# coding: utf-8
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'liquid/c/version'

Gem::Specification.new do |spec|
  spec.name          = "liquid-c"
  spec.version       = Liquid::C::VERSION
  spec.authors       = ["Justin Li", "Dylan Thacker-Smith"]
  spec.email         = ["gems@shopify.com"]
  spec.summary       = "Liquid performance extension in C"
  spec.homepage      = ""
  spec.license       = "MIT"

  spec.extensions    = ['ext/liquid_c/extconf.rb']
  spec.files         = `git ls-files -z`.split("\x0")
  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
  spec.require_paths = ["lib"]

  spec.add_dependency 'liquid', '>= 3.0.0'

  spec.add_development_dependency "bundler", "~> 1.5"
  spec.add_development_dependency "rake"
  spec.add_development_dependency 'rake-compiler'
  spec.add_development_dependency 'minitest'
  spec.add_development_dependency 'stackprof' if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("2.1.0")
end
```
assistant