diff --git a/types/helmet/index.d.ts b/types/helmet/index.d.ts
index a78e768688..0162912d99 100644
--- a/types/helmet/index.d.ts
+++ b/types/helmet/index.d.ts
@@ -20,6 +20,7 @@ declare namespace helmet {
         ieNoOpen?: boolean,
         noCache?: boolean,
         noSniff?: boolean,
+        referrerPolicy?: boolean | IHelmetReferrerPolicyConfiguration,
         xssFilter?: boolean | IHelmetXssFilterConfiguration,
         expectCt?: boolean | IHelmetExpectCtConfiguration,
     }