diff --git a/Installation.md b/Installation.md
index fffdb04..9bd6800 100644
--- a/Installation.md
+++ b/Installation.md
@@ -1,6 +1,9 @@
-## How to install in Debian 11
+## How to install in Linux server
 
-```bash
+These instruction were tested on a fresh Debian 11 and Ubuntu 20.04.
+
+```shell
+apt-update
 apt install nginx php-fpm php-mbstring php-simplexml php-curl
 rm /etc/nginx/sites-enabled/default
 cd /var/www