diff --git a/lib/cache/cache.js b/lib/cache/cache.js
index d10b39b334b..432b9a8ba44 100644
--- a/lib/cache/cache.js
+++ b/lib/cache/cache.js
@@ -6,9 +6,9 @@ const { kEnumerableProperty, isDisturbed } = require('../core/util')
 const { kHeadersList } = require('../core/symbols')
 const { webidl } = require('../fetch/webidl')
 const { Response, cloneResponse } = require('../fetch/response')
-const { Request } = require('../fetch/request')
+const { Request, fromInnerRequest } = require('../fetch/request')
 const { Headers } = require('../fetch/headers')
-const { kState, kHeaders, kGuard, kRealm, kSignal } = require('../fetch/symbols')
+const { kState, kHeaders, kGuard, kRealm } = require('../fetch/symbols')
 const { fetching } = require('../fetch/index')
 const { urlIsHttpHttpsScheme, createDeferredPromise, readAllBytes } = require('../fetch/util')
 const assert = require('assert')
@@ -444,7 +444,7 @@ class Cache {
    * @see https://w3c.github.io/ServiceWorker/#dom-cache-keys
    * @param {any} request
    * @param {import('../../types/cache').CacheQueryOptions} options
-   * @returns {readonly Request[]}
+   * @returns {Promise<readonly Request[]>}
    */
   async keys (request = undefined, options = {}) {
     webidl.brandCheck(this, Cache)
@@ -503,15 +503,12 @@ class Cache {
 
       // 5.4.2
       for (const request of requests) {
-        const requestObject = new Request(kConstruct)
-        requestObject[kState] = request
-        requestObject[kHeaders] = new Headers(kConstruct)
-        requestObject[kHeaders][kHeadersList] = request.headersList
-        requestObject[kHeaders][kGuard] = 'immutable'
-        requestObject[kRealm] = request.client
-        requestObject[kSignal] = new AbortController().signal
-        requestObject[kSignal][kRealm] = requestObject[kRealm]
-
+        const requestObject = fromInnerRequest(
+          request,
+          new AbortController().signal,
+          'immutable'
+        )
+        requestObject[kRealm] = { settingsObject: request.client }
         // 5.4.2.1
         requestList.push(requestObject)
       }
diff --git a/lib/cache/cachestorage.js b/lib/cache/cachestorage.js
index 7e7f0cff2b5..4f3351a6a9b 100644
--- a/lib/cache/cachestorage.js
+++ b/lib/cache/cachestorage.js
@@ -114,7 +114,7 @@ class CacheStorage {
 
   /**
    * @see https://w3c.github.io/ServiceWorker/#cache-storage-keys
-   * @returns {string[]}
+   * @returns {Promise<string[]>}
    */
   async keys () {
     webidl.brandCheck(this, CacheStorage)
diff --git a/lib/fetch/request.js b/lib/fetch/request.js
index f5522486c1d..a9b7c98fdb7 100644
--- a/lib/fetch/request.js
+++ b/lib/fetch/request.js
@@ -844,6 +844,22 @@ function cloneRequest (request) {
   return newRequest
 }
 
+/**
+ * @param {any} innerRequest
+ * @param {AbortSignal} signal
+ * @param {'request' | 'immutable' | 'request-no-cors' | 'response' | 'none'} guard
+ * @returns {Request}
+ */
+function fromInnerRequest (innerRequest, signal, guard) {
+  const request = new Request(kConstruct)
+  request[kState] = innerRequest
+  request[kHeaders] = new Headers(kConstruct)
+  request[kHeaders][kHeadersList] = innerRequest.headersList
+  request[kHeaders][kGuard] = guard
+  request[kSignal] = signal
+  return request
+}
+
 Object.defineProperties(Request.prototype, {
   method: kEnumerableProperty,
   url: kEnumerableProperty,
@@ -970,4 +986,4 @@ webidl.converters.RequestInit = webidl.dictionaryConverter([
   }
 ])
 
-module.exports = { Request, makeRequest }
+module.exports = { Request, makeRequest, fromInnerRequest }