diff --git a/README.md b/README.md
index 656d0b151..b3232b308 100644
--- a/README.md
+++ b/README.md
@@ -216,6 +216,7 @@ To the extent possible under law, [Vitali Fokin](https://github.com/quozd) has w
 * [OAuth](https://github.com/danielcrenna/vault/tree/master/oauth) - A very lightweight library for generating OAuth 1.0a signatures written in C#
 * [Stuntman](https://rimdev.io/stuntman/) - Stuntman is a library for impersonating users during development leveraging .NET Claims Identity.
 * [openiddict](https://github.com/openiddict/openiddict-core) - Flexible and versatile OAuth 2.0/OpenID Connect stack for .NET
+* [Topaz](https://www.topaz.sh/docs/software-development-kits/dotnet/install) - A fine-grained authorization system with .NET SDK.
 
 ## Blazor