diff --git a/types/next/document.d.ts b/types/next/document.d.ts
index b76ed7b2b0..3d238f6c6f 100644
--- a/types/next/document.d.ts
+++ b/types/next/document.d.ts
@@ -104,5 +104,5 @@ export class NextScript extends React.Component<NextScriptProps> {}
 export default class Document<P = {}> extends React.Component<
     P & DefaultDocumentIProps & DocumentProps
 > {
-    static getInitialProps(context: NextDocumentContext): DefaultDocumentIProps;
+    static getInitialProps(context: NextDocumentContext): DefaultDocumentIProps | Promise<DefaultDocumentIProps>;
 }