diff --git a/documentation/INSTALL_RHEL9.md b/documentation/INSTALL_RHEL9.md
index ebdd306..e77160c 100644
--- a/documentation/INSTALL_RHEL9.md
+++ b/documentation/INSTALL_RHEL9.md
@@ -17,8 +17,9 @@ Microshift pre-requisites :
 ```sh
 sudo subscription-manager register --username $RHN_LOGIN --auto-attach
 sudo subscription-manager attach --pool=$RHN_POOL_ID
-sudo dnf install -y osbuild-composer composer-cli cockpit-composer git
+sudo dnf install -y osbuild-composer composer-cli cockpit-composer git firewalld
 sudo systemctl enable --now osbuild-composer.socket
+sudo systemctl enable --now firewalld
 sudo systemctl enable --now cockpit.socket
 sudo systemctl restart osbuild-composer
 sudo usermod -a -G weldr "$(id -un)"