diff --git a/scripts/upgrade b/scripts/upgrade
index 728deba..e5d3988 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -111,6 +111,16 @@ ynh_add_config --template="../conf/config.js.template" --destination="$final_pat
 chmod 400 "$final_path/config.js"
 chown $app:$app "$final_path/config.js"
 
+#=================================================
+# INSTALL THE LOUNGE
+#=================================================
+ynh_script_progression --message="Installing $app..." --weight=10
+
+pushd $final_path
+ 	ynh_use_nodejs
+	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH $ynh_npm install --no-optional
+popd
+
 #=================================================
 # SETUP SYSTEMD
 #=================================================