postgres_upsert.gemspec in postgres_upsert-4.0.0 vs postgres_upsert.gemspec in postgres_upsert-5.0.0

@@ -3,11 +3,11 @@
 $:.unshift lib unless $:.include?(lib)
 
 
 Gem::Specification.new do |s|
   s.name = "postgres_upsert"
-  s.version = "4.0.0"
+  s.version = "5.0.0"
 
   s.platform    = Gem::Platform::RUBY
   s.required_ruby_version     = ">= 1.8.7"
   s.authors = ["Steve Mitchell"]
   s.date = "2014-09-12"
@@ -20,10 +20,10 @@
   s.require_paths      = %w(lib)
   s.homepage = "https://github.com/theSteveMitchell/postgres_upsert"
   s.require_paths = ["lib"]
   s.summary = "A rubygem that integrates with ActiveRecord to insert/update large data sets into the database efficiently"
 
-  s.add_dependency "pg", '~> 0.17.0'
+  s.add_dependency "pg", '>= 0.17.0'
   s.add_dependency "activerecord", '>= 3.0.0'
   s.add_dependency "rails", '>= 3.0.0'
   s.add_development_dependency "bundler"
   s.add_development_dependency "pry-rails"
   s.add_development_dependency "rspec", "~> 2.12"