diff --git a/bootstrap.datepicker/bootstrap.datepicker.d.ts b/bootstrap.datepicker/bootstrap.datepicker.d.ts
index 0633db5358..686cc6b423 100644
--- a/bootstrap.datepicker/bootstrap.datepicker.d.ts
+++ b/bootstrap.datepicker/bootstrap.datepicker.d.ts
@@ -35,6 +35,7 @@ interface DatepickerOptions {
     multidate?: any;
     multidateSeparator?: string;
     orientation?: string;
+    assumeNearbyYear?: any;
 }
 
 interface DatepickerEventObject extends JQueryEventObject {