diff --git a/README.md b/README.md
index 11d88e418cc..9961dd9a4ac 100644
--- a/README.md
+++ b/README.md
@@ -799,6 +799,7 @@ Here are some companies/projects using Swagger Codegen in production. To add you
 - [nViso](http://www.nviso.ch/)
 - [Okiok](https://www.okiok.com)
 - [Onedata](http://onedata.org)
+- [Open International Systems](https://openintl.com/)
 - [OrderCloud.io](http://ordercloud.io)
 - [OSDN](https://osdn.jp)
 - [PagerDuty](https://www.pagerduty.com)