diff --git a/readme.md b/readme.md
index 2f6c236c..9e2598c8 100644
--- a/readme.md
+++ b/readme.md
@@ -297,7 +297,7 @@ If you find yourself breaking things, just delete `Fooocus\user_path_config.txt`
 
 ## Thanks
 
-The codebase starts from an odd mixture of [Automatic1111](https://github.com/AUTOMATIC1111/stable-diffusion-webui) and [ComfyUI](https://github.com/comfyanonymous/ComfyUI). (And they both use GPL license.)
+Fooocus is powered by [FCBH backend](https://github.com/lllyasviel/Fooocus/tree/main/backend), which starts from an odd mixture of [Automatic1111](https://github.com/AUTOMATIC1111/stable-diffusion-webui) and [ComfyUI](https://github.com/comfyanonymous/ComfyUI).
 
 ## Update Log