diff --git a/docs/options.md b/docs/options.md
index a85405a31..74ec1e6ea 100644
--- a/docs/options.md
+++ b/docs/options.md
@@ -60,7 +60,6 @@ You can also customize the `Caddyfile` by using the following environment variab
 | `CADDY_SERVER_LOG_OPTIONS`      | the [server log options block](https://caddyserver.com/docs/caddyfile/directives/log), one per line                                                                                     |                           |
 | `SERVER_NAME`                   | the server name or address                                                                                                                                                              | `localhost`               |
 | `FRANKENPHP_CONFIG`             | a list of extra [FrankenPHP directives](https://frankenphp.dev/docs/config/#caddyfile-config), one per line                                                                             | `import worker.Caddyfile` | 
-| `MERCURE_TRANSPORT_URL`         | the value passed to the `transport_url` directive                                                                                                                                       | `bolt://mercure.db`       |
 | `MERCURE_PUBLISHER_JWT_KEY`     | the JWT key to use for publishers                                                                                                                                                       |                           |
 | `MERCURE_PUBLISHER_JWT_ALG`     | the JWT algorithm to use for publishers                                                                                                                                                 | `HS256`                   |
 | `MERCURE_SUBSCRIBER_JWT_KEY`    | the JWT key to use for subscribers                                                                                                                                                      |                           |