Gemfile for "factory_girl requires Ruby version >= 1.9.2" error

Gemfile

source 'http://rubygems.org'

gem 'rack-test'
gem 'rails', '3.1.3'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails', "  ~> 3.1.0"
  gem 'coffee-rails', "~> 3.1.0"
  gem 'uglifier'
  gem 'therubyracer'
end

gem 'jquery-rails'

gem 'capistrano'
gem 'capistrano-ext'
gem 'capfire'
gem 'tinder'
gem 'crack'

gem 'mysql2', '>= 0.3'
gem 'fastercsv'
gem 'devise', '1.4.5'
gem 'omniauth', '< 1.0.0'
gem 'cancan'
gem 'paperclip', '>= 2.3.15'
gem 'will_paginate'
gem 'transitions', :require => ['transitions', 'active_record/transitions']
gem 'fastercsv'
gem 'hashie'
gem 'settingslogic'
gem 'liquid'
gem 'prawn_rails'
gem 'rmagick', :require => 'RMagick'
gem 'prawn-fast-png', :require => 'prawn/fast_png'
gem 'resque'
gem 'SystemTimer'
gem 'posix-spawn', :require => 'posix/spawn'

gem 'activemerchant', :git => 'git://github.com/woboinc/active_merchant.git', :ref => '78c469f897af24ebc9056f6498c067331a56eeed'
gem 'active_shipping', '>= 0.9.13'
gem 'shippinglogic', '1.2.5', :git => 'git://github.com/woboinc/shippinglogic.git'
gem 'tracking_link', '>= 0.0.1'
gem 'holidays'

gem 'json'
gem 'ruby-openid'
gem 'rack-openid', '>=0.2.1', :require => 'rack/openid'

gem 'haml'
gem 'haml-rails', :group => :development
gem 'compass', :require => false ,:git => "git://github.com/chriseppstein/compass.git", :tag => 'v0.12.alpha.4'

gem 'validates_timeliness'

gem 'chunky_png', '~> 1.2'
gem 'barby', '0.4.2'
gem 'httparty'
gem 'business_time', '>= 0.3.1'

gem 'bartt-ssl_requirement', :require => 'ssl_requirement'
gem "airbrake", '>= 3.0.9'
gem 'nokogiri'
gem 'webrobots', '~> 0.0.10', :git => 'git://github.com/knu/webrobots.git'
gem 'mechanize'
gem 'unicorn'
gem 'newrelic_rpm'

group :test, :development do
  gem 'autotest'
  gem 'redgreen'
  gem 'factory_girl_rails', '>= 1.1.0'
  gem 'rspec-core', '>= 2.8'
  gem 'rspec-rails', '>= 2.8'
  gem 'jasmine', '>= 1.1.0.rc3'
  gem 'fakeweb'
  gem 'shoulda', '>= 2.11.3'
  gem 'shoulda-matchers', '>= 1.0.0'
  gem 'timecop'
  gem 'mongrel'
  gem 'rcov'
  gem 'pry'
  gem 'pry-doc'
  gem 'pry-rails'
  gem 'vcr', '>= 2.0.0.rc1'
  gem 'headless'
  gem 'capybara'
  gem 'capybara-webkit'
  gem 'database_cleaner'
  gem 'launchy', '>= 2.0.5'
  gem 'thin'
  gem 'spork', '~> 0.9.0.rc'
  gem 'guard-rspec', '>= 0.4.2'
  gem 'rb-fsevent', '>= 0.4.3'
  gem 'guard-livereload'
  gem 'query_reviewer', :git => 'git://github.com/nesquena/query_reviewer.git'
end