diff --git a/builder/modal-builder/README.md b/builder/modal-builder/README.md
index a8bd3a2..828ab83 100644
--- a/builder/modal-builder/README.md
+++ b/builder/modal-builder/README.md
@@ -56,5 +56,5 @@ fly launch
 ```
 if not, run this instead
 ```
-fly deploy
+fly deploy -c "toml file"
 ```