diff --git a/README.md b/README.md
index 1d3f5e3e630be2670baf8f4a55d00244a96109f3..09cb3870e8d0acbd498240fd7e978f76bc101552 100644
--- a/README.md
+++ b/README.md
@@ -82,6 +82,8 @@ We **highly recommend** you to **run Paddle Serving in Docker**, please visit [R
 
 **Attention:**: Currently, the default GPU environment of paddlepaddle 2.1 is Cuda 10.2, so the sample code of GPU Docker is based on Cuda 10.2. We also provides docker images and whl packages for other GPU environments. If users use other environments, they need to carefully check and select the appropriate version.
 
+**Attention:** the following so-called 'python' or 'pip' stands for one of Python 3.6/3.7/3.8.
+
 ```
 # Run CPU Docker
 docker pull registry.baidubce.com/paddlepaddle/serving:0.5.0-devel
@@ -115,8 +117,11 @@ Packages of paddle-serving-server and paddle-serving-server-gpu support Centos 6
 
 Packages of paddle-serving-client and paddle-serving-app support Linux and Windows, but paddle-serving-client only support python3.6/3.7/3.8.
 
+**For latest version, Cuda 9.0 or Cuda 10.0 are no longer supported, Python2.7/3.5 is no longer supported. **
+
 Recommended to install paddle >= 2.1.0
 
+
 ```
 # CPU users, please run
 pip install paddlepaddle==2.1.0