diff --git a/README.md b/README.md
index ad5ff60..aafaeae 100644
--- a/README.md
+++ b/README.md
@@ -159,7 +159,7 @@ Notice that `vllm==v0.9.0` has a lot of specific requirements, for example `torc
 ``` sh
 conda create -n cosyvoice_vllm --clone cosyvoice
 conda activate cosyvoice_vllm
-pip install vllm==v0.9.0 transformers==4.51.3 -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host=mirrors.aliyun.com
+pip install vllm==v0.9.0 transformers==4.51.3 numpy==1.26.4 -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host=mirrors.aliyun.com
 python vllm_example.py
 ```
 
diff --git a/requirements.txt b/requirements.txt
index d0eb5af..149bc43 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,6 +17,7 @@ lightning==2.2.4
 matplotlib==3.7.5
 modelscope==1.20.0
 networkx==3.1
+numpy==1.26.4
 omegaconf==2.3.0
 onnx==1.16.0
 onnxruntime-gpu==1.18.0; sys_platform == 'linux'