diff --git a/examples/opencpop/svs1/README.md b/examples/opencpop/svs1/README.md
index c2ace17e9..ca5cd9d9b 100644
--- a/examples/opencpop/svs1/README.md
+++ b/examples/opencpop/svs1/README.md
@@ -7,11 +7,14 @@ This example contains code used to train a [DiffSinger](https://arxiv.org/abs/21
 Download Opencpop from it's [Official Website](https://wenet.org.cn/opencpop/download/) and extract it to `~/datasets`. Then the dataset is in the directory `~/datasets/Opencpop`.
 
 ### pip install
+<!-- Comment: Cause ppdiffusers will install newest huggingface_hub, but cached_download function has been removed, So need to install the specified version.>
+<!-- TODO: If the corresponding dependency library is OK, it needs to be deleted.-->
 ```shell
 pip install huggingface_hub==0.25.2
 ```
 
 
+
 ## Get Started
 Assume the path to the dataset is `~/datasets/Opencpop`.
 Run the command below to
diff --git a/examples/opencpop/svs1/README_cn.md b/examples/opencpop/svs1/README_cn.md
index 89432ff86..c7707bc91 100644
--- a/examples/opencpop/svs1/README_cn.md
+++ b/examples/opencpop/svs1/README_cn.md
@@ -8,6 +8,8 @@
 从 [官方网站](https://wenet.org.cn/opencpop/download/) 下载数据集
 
 ### pip 安装
+<!-- 注释: 因为ppdiffusion会安装最新的huggingface_hub，但cached_download功能已被删除，所以需要安装指定的版本。>
+<!-- 待完成: 如果相应的依赖库正常，则将其删除。-->
 ```shell
 pip install huggingface_hub==0.25.2
 ```