diff --git a/README.md b/README.md
index 4f88ee2..256aca8 100644
--- a/README.md
+++ b/README.md
@@ -206,6 +206,7 @@ See [Vivraan/godot-lang-support](https://github.com/Vivraan/godot-lang-support).
 - [Escoria](https://github.com/godotengine/escoria) - Point & click adventure game framework (Godot 2.1, 3.2+).
 - [Fast Fourier Transform (FFT)](https://github.com/tavurth/godot-fft) - Fast Fourier Transform in GDScript (Godot 4.x).
 - [GdUnit3](https://github.com/MikeSchulze/gdUnit3) - Godot Unit Testing Framework (Godot 3.x).
+- [GdUnit4](https://github.com/MikeSchulze/gdUnit4) - Godot Unit Testing Framework (Godot 4.x).
 - [GodotNotificationCenter](https://github.com/didier-v/GodotNotificationCenter) - A notification center (Godot 3.x).
 - [GodotPhoenixChannels](https://github.com/alfredbaudisch/GodotPhoenixChannels) - A GDScript and Godot Engine implementation for the Channels API of the Phoenix Framework (Godot 3.*).
 - [Godot Radial Menu](https://github.com/tavurth/godot-radial-menu) - A radial menu written in shader code for performance.