gem rake-hooks (1) has an invalid gemspec

rake-hooks(newly-minted).gemspec

# -*- encoding: utf-8 -*-
require File.expand_path('../lib/rake/hooks/version', __FILE__)

Gem::Specification.new do |gem|
  gem.authors       = ["Matt Scilipoti"]
  gem.email         = ["matt@scilipoti.name"]
  gem.description   = %q{Is this valid?}
  gem.summary       = %q{I hope it is valid}
  gem.homepage      = ""

  gem.files         = `git ls-files`.split($\)
  gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
  gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
  gem.name          = "rake-hooks"
  gem.require_paths = ["lib"]
  gem.version       = Rake::Hooks::VERSION
end

rake-hooks.gemspec

# -*- encoding: utf-8 -*-
$:.push File.expand_path("../lib", __FILE__)
require "rake/hooks/version"

Gem::Specification.new do |s|
  s.name        = "rake-hooks"
  s.version     = Rake::Hooks::VERSION
  s.email       = ["guillermo@cientifico.net", "joel@developwithstyle.com"]
  s.authors     = ["Guillermo Álvarez", "Joel Moss"]
  s.homepage    = 'https://github.com/guillermo/rake-hooks'
  s.summary     = "Add after and before hooks to rake tasks"
  s.description = 'Add after and before hooks to rake tasks. You can use `after :task do ... end` and `before :task do ... end`.'

  s.rubyforge_project = "rake-hooks"

  s.files         = `git ls-files`.split("\n")
  s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
  s.require_paths = ["lib"]

  s.add_runtime_dependency "rake"

  s.add_development_dependency "bundler"
end