diff --git a/README.md b/README.md
index 0837ee91..6185cf8c 100644
--- a/README.md
+++ b/README.md
@@ -978,6 +978,7 @@ Table of Contents
   * [nextdns.io](https://nextdns.io) - DNS based firewall, 300K free queries monthly
   * [noip](https://www.noip.com/) — a dynamic dns service that allows up to 3 hostnames free with confirmation every 30 days
   * [ns1.com](https://ns1.com/) — Data Driven DNS, automatic traffic management, 500k free queries
+  * [nsupdate.info](https://www.nsupdate.info/) — Free and open-source Dynamic DNS service
   * [pointhq.com](https://pointhq.com/developer) — Free DNS hosting on Heroku.
   * [selectel.com](https://selectel.com/services/dns/) — Free DNS hosting with unlimited records, anycast
   * [web.gratisdns.dk](https://web.gratisdns.dk/domaener/dns/) — Free DNS hosting.