diff --git a/README.md b/README.md
index 5e93c543e0..47f5ae3306 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,10 @@ P4[![Broadcom](https://sonic-jenkins.westus.cloudapp.azure.com/job/p4/job/buildi
 Build an [Open Network Install Environment (ONIE)](https://github.com/opencomputeproject/onie) compatiable network operating system (NOS) installer image for network switches, and also build docker images running inside the NOS.
 
 # Prerequisite
-## Clone or fetch the code repository with all git submodules
+## SAI Version 
+SONiC V2 is using [SAI 0.9.4](https://github.com/opencomputeproject/SAI/tree/v0.9.4). 
+
+# Clone or fetch the code repository with all git submodules
 To clone the code repository recursively, assuming git version 1.9 or newer
 
     git clone --recursive https://github.com/Azure/sonic-buildimage.git