diff --git a/README.md b/README.md
index 47be2e52..14b7245b 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,10 @@ Users of this software are expected to use this software responsibly while abidi
  1. [GFPGANv1.4](https://huggingface.co/hacksider/deep-live-cam/resolve/main/GFPGANv1.4.pth)
  2. [inswapper_128_fp16.onnx](https://huggingface.co/hacksider/deep-live-cam/resolve/main/inswapper_128_fp16.onnx)
 
-Then put those 2 files on the "**models**" folder
+Then put those 2 files on the "**models**" folder, you can further optimize inswapper_128_fp16.onnx by using [onnxslim](https://github.com/inisis/OnnxSlim)
+```
+onnxslim inswapper_128_fp16.onnx inswapper_128_fp16.onnx
+```
 
 #### 4. Install dependency
 We highly recommend to work with a  `venv`  to avoid issues.
diff --git a/requirements.txt b/requirements.txt
index 68583131..ef325b1c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,3 +22,4 @@ protobuf==4.23.2
 tqdm==4.66.4
 gfpgan==1.3.8
 pyobjc==9.1; sys_platform == 'darwin'
+onnxslim