diff --git a/readme.md b/readme.md
index 3b94613..7837b0c 100644
--- a/readme.md
+++ b/readme.md
@@ -192,6 +192,7 @@ You can provide multiple comma-separated values in bg_color option to render a g
 - `hide_progress` - Hides the progress bar and percentage _(boolean)_
 - `custom_title` - Sets a custom title for the card
 - `layout` - Switch between two available layouts `default` & `compact`
+- `api_domain` - Set a custom api domain for the card
 
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