ballast.gemspec in ballast-2.2.3 vs ballast.gemspec in ballast-2.2.4

@@ -20,10 +20,10 @@
   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.require_paths = ["lib"]
 
-  gem.required_ruby_version = ">= 2.1.0"
+  gem.required_ruby_version = ">= 2.3.0"
 
   gem.add_dependency("actionpack", "~> 4.1")
   gem.add_dependency("brauser", "~> 4.0")
   gem.add_dependency("addressable", "~> 2.3")
   gem.add_dependency("em-synchrony", "~> 1.0")