prawn-svg.gemspec in prawn-svg-0.17.0 vs prawn-svg.gemspec in prawn-svg-0.18.0

@@ -16,10 +16,12 @@
   gem.files         = `git ls-files`.split("\n")
   gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   gem.name          = "prawn-svg"
   gem.require_paths = ["lib"]
 
+  gem.required_ruby_version = '>= 1.9.3'
+
   gem.add_runtime_dependency "prawn", ">= 0.8.4", "< 3"
   gem.add_runtime_dependency "css_parser", "~> 1.3"
-  gem.add_development_dependency "rspec", "~> 2.14"
+  gem.add_development_dependency "rspec", "~> 3.0"
   gem.add_development_dependency "rake", "~> 10.1"
 end