diff --git a/README.md b/README.md
index 18d9d4040..33cfc551a 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,9 @@ Step1. Install YOLOX from source.
 ```shell
 git clone git@github.com:Megvii-BaseDetection/YOLOX.git
 cd YOLOX
-pip3 install -v -e .  # or  python3 setup.py develop
+pip3 install -U pip setuptools
+pip3 install torch torchvision torchaudio
+pip3 install --no-build-isolation -v -e .  # or  python3 setup.py develop
 ```
 
 </details>
diff --git a/docs/quick_run.md b/docs/quick_run.md
index f00bb995b..cb4df28b5 100644
--- a/docs/quick_run.md
+++ b/docs/quick_run.md
@@ -7,8 +7,9 @@ Step1. Install YOLOX.
 ```shell
 git clone git@github.com:Megvii-BaseDetection/YOLOX.git
 cd YOLOX
-pip3 install -U pip && pip3 install -r requirements.txt
-pip3 install -v -e .  # or  python3 setup.py develop
+pip3 install -U pip setuptools
+pip3 install torch torchvision torchaudio
+pip3 install --no-build-isolation -v -e .  # or  python3 setup.py develop
 ```
 Step2. Install [pycocotools](https://github.com/cocodataset/cocoapi).
 
diff --git a/requirements.txt b/requirements.txt
index 80f6d1755..df35106cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,4 +15,4 @@ tensorboard
 # pycocotools corresponds to https://github.com/ppwwyyxx/cocoapi
 pycocotools>=2.0.2
 onnx>=1.13.0
-onnx-simplifier==0.4.10
+onnxsim==0.4.13