diff --git a/source/_components/gtfs.markdown b/source/_components/gtfs.markdown
index 63c6222f5b0..d69b79452db 100644
--- a/source/_components/gtfs.markdown
+++ b/source/_components/gtfs.markdown
@@ -71,4 +71,9 @@ offset:
   required: false
   default: 0
   type: [integer, time]
+include_tomorrow:
+  description: Also search through tomorrow's schedule if no more departures are set for today.
+  required: false
+  default: false
+  type: boolean
 {% endconfiguration %}