diff --git a/celery_exporter/__main__.py b/celery_exporter/__main__.py
index 2737dcd..fd8971a 100644
--- a/celery_exporter/__main__.py
+++ b/celery_exporter/__main__.py
@@ -53,7 +53,7 @@
 @click.option(
     "--transport-options",
     type=str,
-    allow_from_autoenv=False,
+    show_envvar=True,
     help="JSON object with additional options passed to the underlying transport.",
 )
 @click.option(