diff --git a/src/components/HeaderDropdown/index.d.ts b/src/components/HeaderDropdown/index.d.ts
index e9dac7e532570e2f85a6a220d5d4ff9b97194927..43fa9abae9fb6adebff9ecebc5ae31097c35bbf9 100644
--- a/src/components/HeaderDropdown/index.d.ts
+++ b/src/components/HeaderDropdown/index.d.ts
@@ -1,2 +1,8 @@
 import * as React from 'react';
-export default class HeaderDropdown extends React.Component<any, any> {}
+import { DropDownProps } from 'antd/lib/dropdown';
+
+export interface IHeaderDropdownProps extends DropDownProps {
+  overlayClassName?: string;
+}
+
+export default class HeaderDropdown extends React.Component<IHeaderDropdownProps, any> {}