diff --git a/src/index.tsx b/src/index.tsx
index d04ba0808..7a385a85d 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -66,6 +66,8 @@ export { registerLocale, setDefaultLocale, getDefaultLocale };
 const outsideClickIgnoreClass = "react-datepicker-ignore-onclickoutside";
 const WrappedCalendar = onClickOutside(Calendar);
 
+export { ReactDatePickerCustomHeaderProps } from "./calendar";
+
 // Compares dates year+month combinations
 function hasPreSelectionChanged(
   date1?: Date | null,