diff --git a/scripts/upgrade b/scripts/upgrade
index 5d5bddf..b1093d4 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -124,10 +124,10 @@ ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ st
 #=================================================
 
 pushd "$final_path"
-	ynh_exec_warn_less yarn install
-	ynh_exec_warn_less yarn run clean
-	ynh_exec_warn_less yarn build
-	ynh_exec_warn_less yarn migrate
+	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH yarn install
+	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH yarn run clean
+	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH NODE_ENV=production yarn build
+	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH yarn migrate
 popd
 
 #=================================================