diff --git a/types/text-table/index.d.ts b/types/text-table/index.d.ts
index 00ee4b61e8..91c3a29461 100644
--- a/types/text-table/index.d.ts
+++ b/types/text-table/index.d.ts
@@ -20,7 +20,7 @@ declare namespace table {
         hsep?: string;
 
         /** An array of alignment types for each column, default ['l','l',...]. */
-        align?: Array<'l' | 'r' | 'c' | '.'>;
+        align?: Array<'l' | 'r' | 'c' | '.' | null | undefined>;
 
         /** A callback function to use when calculating the string length. */
         stringLength?(str: string): number;