diff --git a/types/helmet/helmet-tests.ts b/types/helmet/helmet-tests.ts
index 20a453cdaf..0e71d8ce81 100644
--- a/types/helmet/helmet-tests.ts
+++ b/types/helmet/helmet-tests.ts
@@ -232,7 +232,8 @@ function noSniffTest() {
  * @summary Test for {@see helmet#referrerPolicy} function.
  */
 function referrerPolicyTest() {
-    app.use(helmet.referrerPolicy({ policy: 'same-origin' }))
+    app.use(helmet.referrerPolicy({ policy: 'same-origin' }));
+    app.use(helmet.referrerPolicy({ policy: ['no-referrer', 'origin', 'strict-origin', 'strict-origin-when-cross-origin'] }));
 }
 
 /**
diff --git a/types/helmet/index.d.ts b/types/helmet/index.d.ts
index ec6fced62d..27c4230170 100644
--- a/types/helmet/index.d.ts
+++ b/types/helmet/index.d.ts
@@ -168,7 +168,7 @@ declare namespace helmet {
     }
 
     export interface IHelmetReferrerPolicyConfiguration {
-        policy?: string;
+        policy?: string | string[];
     }
 
     export interface IHelmetXssFilterConfiguration {