diff --git a/install.sh b/install.sh
index cb76db5..d9c193b 100755
--- a/install.sh
+++ b/install.sh
@@ -36,6 +36,9 @@ usage() {
 	echo -e "\t--url <URL> Custom remote URL."
 	echo -e "\t--branch <stable|dev> Choose the version to install (stable by default)"
 	echo
+	echo "Notes:"
+	echo -e "\tThis install script should be able to upgrade a current nalc-sever installation."
+	echo
 	echo "License: GPLv3. Please read the LICENSE file."
 	echo "Author: Sys4 - https://sys4.fr#contact"