page_up.gemspec in page_up-0.0.13 vs page_up.gemspec in page_up-1.0.0

@@ -16,9 +16,10 @@
 
   spec.files         = `git ls-files`.split($/)
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(spec|features)/})
   spec.require_paths = ["lib"]
+  spec.required_ruby_version = ">= 2.3"
 
   if RUBY_VERSION.to_f < 2
     spec.add_development_dependency "rake", '~> 10.0'
   elsif RUBY_VERSION.to_f < 2.3
     spec.add_development_dependency "rake", '~> 12.0'