diff --git a/README.md b/README.md
index 6bbcded..2ee785c 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ We recommend novice developers to use the development boards designed by Espress
 
 ESP-WHO runs on ESP-IDF. For details on getting ESP-IDF, please refer to [ESP-IDF Programming Guide](https://idf.espressif.com/).
 
-> Please use the latest version of ESP-IDF on the master branch.
+> Please use the latest ESP-IDF on the release/v4.4 branch.
 
 #### Get ESP-WHO
 
diff --git a/README_CN.md b/README_CN.md
index 7d09e02..3d08f94 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -30,7 +30,7 @@ ESP-WHO 提供了例如人脸检测、人脸识别、猫脸检测和手势识别
 
 ESP-WHO 的运行基于 ESP-IDF。关于获取 ESP-IDF 的细节，请参考 [ESP-IDF 编程指南](https://idf.espressif.com/)。
 
-> 请使用 ESP-IDF 在 master 分支上的最新版本。
+> 请使用 ESP-IDF 在 release/v4.4 分支上的最新版本。
 
 #### 获取 ESP-WHO