onebox.gemspec in onebox-1.9.5 vs onebox.gemspec in onebox-1.9.6

- old
+ new

@@ -39,7 +39,7 @@
   spec.add_development_dependency 'sinatra', '~> 1.4'
   spec.add_development_dependency 'sinatra-contrib', '~> 1.4'
   spec.add_development_dependency 'haml', '~> 4.0'
   spec.add_development_dependency 'listen', '~> 2.10.0'
 
-  spec.required_ruby_version = '>=2.3.0'
+  spec.required_ruby_version = '>=2.4.0'
 end