diff --git a/readme.md b/readme.md
index e80eaa29..9395bcb3 100644
--- a/readme.md
+++ b/readme.md
@@ -54,4 +54,4 @@ Note that some of these tricks are currently (2023 Aug 11) impossible to reprodu
 
 ## Thanks
 
-The codebase starts from an odd mixture of [Automatic1111](https://github.com/AUTOMATIC1111/stable-diffusion-webui) and [ComfyUI](https://github.com/comfyanonymous/ComfyUI).
+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.)