diff --git a/types/exceljs/index.d.ts b/types/exceljs/index.d.ts
index be82b7d7f9..87b7864016 100644
--- a/types/exceljs/index.d.ts
+++ b/types/exceljs/index.d.ts
@@ -501,17 +501,17 @@ export interface Column {
 	/**
 	 * Can be a string to set one row high header or an array to set multi-row high header
 	 */
-	header: string | string[];
+	header?: string | string[];
 
 	/**
 	 * The name of the properties associated with this column in each row
 	 */
-	key: string;
+	key?: string;
 
 	/**
 	 * The width of the column
 	 */
-	width: number;
+	width?: number;
 
 	/**
 	 * Set an outline level for columns