diff --git a/examples/cartrade/README.md b/examples/cartrade/README.md
index 37f77ac2b3..6f8146a1bc 100644
--- a/examples/cartrade/README.md
+++ b/examples/cartrade/README.md
@@ -3,9 +3,10 @@
 ## Prerequisites
 
 Before you begin, you need to check that you have all the prerequisites installed as follows:
+- OS: Linux (recommended: Ubuntu18.04 or CentOS7)
 - Docker (recommend: v17.06.2-ce or greater)
 - Docker-compose (recommend: v1.14.0 or greater)
-- node.js (recommend: v10.23.0 or greater)
+- node.js v12 (recommend: v12.20.2 or greater)
 - The ports 5034, 5040, 5050 are available (If they are already used, the following processes can be done by changing the port number setting)
 
 ## Boot method