diff --git a/types/node-fetch/index.d.ts b/types/node-fetch/index.d.ts
index aaaf30a5e3..874e216e89 100644
--- a/types/node-fetch/index.d.ts
+++ b/types/node-fetch/index.d.ts
@@ -63,7 +63,7 @@ type RequestCache =
 export class Headers {
 	append(name: string, value: string): void;
 	delete(name: string): void;
-	get(name: string): string;
+	get(name: string): string | null;
 	getAll(name: string): Array<string>;
 	has(name: string): boolean;
 	set(name: string, value: string): void;