diff --git a/README-CN.md b/README-CN.md
index 45505fd..c12e622 100644
--- a/README-CN.md
+++ b/README-CN.md
@@ -215,7 +215,9 @@ func main(){
 		// Which type of credential you want
 		SetType("ecs_ram_role").
 		// `roleName` is optional. It will be retrieved automatically if not set. It is highly recommended to set it up to reduce requests
-		SetRoleName("RoleName")
+		SetRoleName("RoleName").
+		// `EnableIMDSv2` is optional and is recommended to be turned on. It can be replaced by setting environment variable: ALIBABA_CLOUD_ECS_IMDSV2_ENABLE
+		SetEnableIMDSv2(true)
 
 	ecsCredential, err := credentials.NewCredential(config)
 	if err != nil {
diff --git a/README.md b/README.md
index 80a567d..707461c 100644
--- a/README.md
+++ b/README.md
@@ -215,7 +215,9 @@ func main(){
 		// Which type of credential you want
 		SetType("ecs_ram_role").
 		// `roleName` is optional. It will be retrieved automatically if not set. It is highly recommended to set it up to reduce requests
-		SetRoleName("RoleName")
+		SetRoleName("RoleName").
+		// `EnableIMDSv2` is optional and is recommended to be turned on. It can be replaced by setting environment variable: ALIBABA_CLOUD_ECS_IMDSV2_ENABLE
+		SetEnableIMDSv2(true)
 
 	ecsCredential, err := credentials.NewCredential(config)
 	if err != nil {