diff --git a/src/types/tour.d.ts b/src/types/tour.d.ts
index edf3eda1e..1748215c0 100644
--- a/src/types/tour.d.ts
+++ b/src/types/tour.d.ts
@@ -3,6 +3,14 @@ import Step from "./step";
 
 declare namespace Tour {
     interface TourOptions {
+        /**
+         * If true, will issue a `window.confirm` before cancelling
+         */
+        confirmCancel?: boolean;
+        /**
+         * The message to display in the confirm dialog
+         */
+        confirmCancelMessage?: string;
         /**
          * Default options for Steps created through `addStep`
          */