diff --git a/types/react-datepicker/react-datepicker-tests.tsx b/types/react-datepicker/react-datepicker-tests.tsx
index b47c08ed73..5e913be496 100644
--- a/types/react-datepicker/react-datepicker-tests.tsx
+++ b/types/react-datepicker/react-datepicker-tests.tsx
@@ -34,7 +34,7 @@ const defaultLocale = getDefaultLocale();
 	forceShowMonthNavigation
 	formatWeekDay={date => ''}
 	formatWeekNumber={date => 0}
-	highlightDates={[new Date()]}
+	highlightDates={[{ someClassName: [new Date()]}]}
 	id=""
 	includeDates={[new Date()]}
 	includeTimes={[new Date()]}