diff --git a/scripts/install b/scripts/install
index fd0b731..27683eb 100755
--- a/scripts/install
+++ b/scripts/install
@@ -50,7 +50,7 @@ pushd $install_dir
     ynh_use_nodejs
 
 	ynh_script_progression --message="npm install... This can be very long, be patient !" --weight=18
-	ynh_exec_warn_less env $ynh_node_load_PATH $ynh_npm ci --quiet --network-timeout=100000
+	ynh_exec_warn_less env $ynh_node_load_PATH $ynh_npm ci --quiet --production --prefer-offline --network-timeout=100000
 
 	ynh_script_progression --message="npm run build... This can be very long, be patient !" --weight=25
 	ynh_exec_warn_less env $ynh_node_load_PATH $ynh_npm run build