diff --git a/scripts/upgrade b/scripts/upgrade
index c6b7a83..15075a3 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -121,11 +121,11 @@ ynh_secure_remove $final_path/live/config/initializers/timeout.rb
 # NGINX CONFIGURATION
 #=================================================
 
-# TODO: use official helper ynh_add_nginx_config
-# Modify Nginx configuration file and copy it to Nginx conf directory
-sed -i "s@__PATH__@$app@g" ../conf/nginx.conf*
-sed -i "s@__FINALPATH__@$final_path@g" ../conf/nginx.conf*
-cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/$app.conf
+ynh_add_nginx_config
+
+#=================================================
+# UPGRADE MASTODON
+#=================================================
 
 # Upgrade rbenv and ruby plugins
 ynh_setup_source "$final_path/.rbenv"                    "app-rbenv"