diff --git a/README.md b/README.md
index facacd2..263ccc1 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 Monitoring Wireguard is not convinient, need to login into server and type wg show. That's why this platform is being created, to view all configurations in a more straight forward way.
 ## Installation
 **Requirement:**
+- Ubuntu 18.04.1 LTS, other OS might work, but haven't test yet.
 - Wireguard
 - Configuration files under **/etc/wireguard**
 - Python 3.7