diff --git a/README.md b/README.md
index 4336ef06836..2ac58b6695e 100644
--- a/README.md
+++ b/README.md
@@ -84,6 +84,7 @@ The `body` mixins are the most common way to format the request/response body. M
 
 - [`.arrayBuffer()`](https://fetch.spec.whatwg.org/#dom-body-arraybuffer)
 - [`.blob()`](https://fetch.spec.whatwg.org/#dom-body-blob)
+- [`.bytes()`](https://fetch.spec.whatwg.org/#dom-body-bytes)
 - [`.json()`](https://fetch.spec.whatwg.org/#dom-body-json)
 - [`.text()`](https://fetch.spec.whatwg.org/#dom-body-text)
 
diff --git a/docs/docs/api/Dispatcher.md b/docs/docs/api/Dispatcher.md
index ecc3cfd61f7..1c153e6a7f2 100644
--- a/docs/docs/api/Dispatcher.md
+++ b/docs/docs/api/Dispatcher.md
@@ -488,11 +488,13 @@ The `RequestOptions.method` property should not be value `'CONNECT'`.
 
 `body` contains the following additional [body mixin](https://fetch.spec.whatwg.org/#body-mixin) methods and properties:
 
-- `text()`
-- `json()`
-- `arrayBuffer()`
-- `body`
-- `bodyUsed`
+* [`.arrayBuffer()`](https://fetch.spec.whatwg.org/#dom-body-arraybuffer)
+* [`.blob()`](https://fetch.spec.whatwg.org/#dom-body-blob)
+* [`.bytes()`](https://fetch.spec.whatwg.org/#dom-body-bytes)
+* [`.json()`](https://fetch.spec.whatwg.org/#dom-body-json)
+* [`.text()`](https://fetch.spec.whatwg.org/#dom-body-text)
+* `body`
+* `bodyUsed`
 
 `body` can not be consumed twice. For example, calling `text()` after `json()` throws `TypeError`.
 
diff --git a/docs/docs/api/Fetch.md b/docs/docs/api/Fetch.md
index c3406f128dc..00c349847dc 100644
--- a/docs/docs/api/Fetch.md
+++ b/docs/docs/api/Fetch.md
@@ -28,6 +28,7 @@ This API is implemented as per the standard, you can find documentation on [MDN]
 
 - [`.arrayBuffer()`](https://fetch.spec.whatwg.org/#dom-body-arraybuffer)
 - [`.blob()`](https://fetch.spec.whatwg.org/#dom-body-blob)
+- [`.bytes()`](https://fetch.spec.whatwg.org/#dom-body-bytes)
 - [`.formData()`](https://fetch.spec.whatwg.org/#dom-body-formdata)
 - [`.json()`](https://fetch.spec.whatwg.org/#dom-body-json)
 - [`.text()`](https://fetch.spec.whatwg.org/#dom-body-text)
diff --git a/lib/api/readable.js b/lib/api/readable.js
index 51be2907856..2a597c006e7 100644
--- a/lib/api/readable.js
+++ b/lib/api/readable.js
@@ -326,7 +326,7 @@ function chunksConcat (chunks, length) {
     // fast-path
     return new Uint8Array(chunks[0])
   }
-  const buffer = new Uint8Array(length)
+  const buffer = new Uint8Array(Buffer.allocUnsafeSlow(length).buffer)
 
   let offset = 0
   for (let i = 0; i < chunks.length; ++i) {
diff --git a/test/readable.js b/test/readable.js
index dd0631daf8b..e6a6ed0dccd 100644
--- a/test/readable.js
+++ b/test/readable.js
@@ -83,6 +83,27 @@ describe('Readable', () => {
     t.deepStrictEqual(arrayBuffer, expected)
   })
 
+  test('.bytes()', async function (t) {
+    t = tspl(t, { plan: 1 })
+
+    function resume () {
+    }
+    function abort () {
+    }
+    const r = new Readable({ resume, abort })
+
+    r.push(Buffer.from('hello'))
+    r.push(Buffer.from(' world'))
+
+    process.nextTick(() => {
+      r.push(null)
+    })
+
+    const bytes = await r.bytes()
+
+    t.deepStrictEqual(bytes, new TextEncoder().encode('hello world'))
+  })
+
   test('.json()', async function (t) {
     t = tspl(t, { plan: 1 })