diff --git a/typeid/typeid/README.md b/typeid/typeid/README.md
index 601ce6e6..1c125c03 100644
--- a/typeid/typeid/README.md
+++ b/typeid/typeid/README.md
@@ -76,6 +76,7 @@ Latest spec version: v0.3.0
 | [C# (.Net)](https://github.com/TenCoKaciStromy/typeid-dotnet) | [@TenCoKaciStromy](https://github.com/TenCoKaciStromy)                                    | v0.2 on 2023-06-30                                                                                                  |
 | [C# (.Net Standard 2.1)](https://github.com/cbuctok/typeId)   | [@cbuctok](https://github.com/cbuctok)                                                    | v0.2 on 2023-07-03                                                                                                  |
 | [C# (.NET)](https://github.com/firenero/TypeId)               | [@firenero](https://github.com/firenero)                                                  | v0.3 on 2024-04-15                                                                                                  |
+| [C# (.NET)](https://github.com/rmja/TypeSafeId)               | [@rmja](https://github.com/rmja)                                                          | v0.3 on 2026-08-13                                                                                                  |
 | [Dart](https://github.com/TBD54566975/typeid-dart)            | [@mistermoe](https://github.com/mistermoe) [@tbd54566975](https://github.com/tbd54566975) | [v0.3 on 2024-07-02](https://github.com/TBD54566975/typeid-dart/actions/runs/9755701869/job/26924658060#step:6:10)  |
 | [Elixir](https://github.com/sloanelybutsurely/typeid-elixir)  | [@sloanelybutsurely](https://github.com/sloanelybutsurely)                                | v0.3 on 2024-04-22                                                                                                  |
 | [Elixir](https://github.com/xinz/elixir_typeid)               | [@xinz](https://github.com/xinz)                                                          | v0.1 on 2024-06-03                                                                                                  |