diff --git a/packages/next/package.json b/packages/next/package.json
index fb97a45be6be7af..bffef96b46981c1 100644
--- a/packages/next/package.json
+++ b/packages/next/package.json
@@ -79,7 +79,6 @@
     "browserify-zlib": "0.2.0",
     "browserslist": "4.16.6",
     "buffer": "5.6.0",
-    "bytes": "3.1.0",
     "caniuse-lite": "^1.0.30001228",
     "chalk": "2.4.2",
     "chokidar": "3.5.1",
@@ -104,6 +103,7 @@
     "postcss": "8.2.15",
     "process": "0.11.10",
     "querystring-es3": "0.2.1",
+    "raw-body": "2.4.1",
     "react-is": "17.0.2",
     "react-refresh": "0.8.3",
     "regenerator-runtime": "0.13.4",
@@ -168,7 +168,6 @@
     "@types/babel__generator": "7.6.2",
     "@types/babel__template": "7.4.0",
     "@types/babel__traverse": "7.11.0",
-    "@types/bytes": "3.1.0",
     "@types/ci-info": "2.0.0",
     "@types/compression": "0.0.36",
     "@types/content-disposition": "0.5.4",
diff --git a/packages/next/server/api-utils.ts b/packages/next/server/api-utils.ts
index f24a66520ae432d..d44c6fc8db9ed91 100644
--- a/packages/next/server/api-utils.ts
+++ b/packages/next/server/api-utils.ts
@@ -1,8 +1,7 @@
 import { IncomingMessage, ServerResponse } from 'http'
 import { parse } from 'next/dist/compiled/content-type'
 import { CookieSerializeOptions } from 'next/dist/compiled/cookie'
-import getStream from 'get-stream'
-import bytes from 'bytes'
+import getRawBody from 'raw-body'
 import { PageConfig, PreviewData } from 'next/types'
 import { Stream } from 'stream'
 import { isResSent, NextApiRequest, NextApiResponse } from '../shared/lib/utils'
@@ -137,45 +136,6 @@ export async function apiResolver(
   }
 }
 
-// Ensures that the user-provided encoding type is a valid encoding
-function getValidEncoding(encoding: string): BufferEncoding | undefined {
-  switch (encoding) {
-    case 'ascii': {
-      return 'ascii'
-    }
-    case 'utf8': {
-      return 'utf8'
-    }
-    case 'utf-8': {
-      return 'utf-8'
-    }
-    case 'utf16le': {
-      return 'utf16le'
-    }
-    case 'ucs2': {
-      return 'ucs2'
-    }
-    case 'ucs-2': {
-      return 'ucs-2'
-    }
-    case 'base64': {
-      return 'base64'
-    }
-    case 'latin1': {
-      return 'latin1'
-    }
-    case 'binary': {
-      return 'binary'
-    }
-    case 'hex': {
-      return 'hex'
-    }
-    default: {
-      return undefined
-    }
-  }
-}
-
 /**
  * Parse incoming message like `json` or `urlencoded`
  * @param req request object
@@ -191,16 +151,14 @@ export async function parseBody(
     contentType = parse('text/plain')
   }
   const { type, parameters } = contentType
-
-  const encoding = getValidEncoding(parameters.charset) || 'utf-8'
+  const encoding = parameters.charset || 'utf-8'
 
   let buffer
 
   try {
-    const maxBuffer = bytes.parse(limit)
-    buffer = await getStream.buffer(req, { maxBuffer, encoding })
+    buffer = await getRawBody(req, { encoding, limit })
   } catch (e) {
-    if (isError(e) && e.name === 'MaxBufferError') {
+    if (isError(e) && e.type === 'entity.too.large') {
       throw new ApiError(413, `Body exceeded ${limit} limit`)
     } else {
       throw new ApiError(400, 'Invalid body')
diff --git a/yarn.lock b/yarn.lock
index d8c132dc67827a5..dd571469c7e220d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4400,11 +4400,6 @@
   resolved "https://registry.yarnpkg.com/@types/braces/-/braces-3.0.1.tgz#5a284d193cfc61abb2e5a50d36ebbc50d942a32b"
   integrity sha512-+euflG6ygo4bn0JHtn4pYqcXwRtLvElQ7/nnjDu7iYG56H0+OhCd7d6Ug0IE3WcFpZozBKW2+80FUbv5QGk5AQ==
 
-"@types/bytes@3.1.0":
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/@types/bytes/-/bytes-3.1.0.tgz#835a3e4aea3b4d7604aca216a78de372bff3ecc3"
-  integrity sha512-5YG1AiIC8HPPXRvYAIa7ehK3YMAwd0DWiPCtpuL9sgKceWLyWsVtLRA+lT4NkoanDNF9slwQ66lPizWDpgRlWA==
-
 "@types/cacheable-request@^6.0.1":
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/@types/cacheable-request/-/cacheable-request-6.0.1.tgz#5d22f3dded1fd3a84c0bbeb5039a7419c2c91976"
@@ -10092,11 +10087,6 @@ get-stdin@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-4.0.1.tgz#b968c6b0a04384324902e8bf1a5df32579a450fe"
 
-get-stream@6.0.0, get-stream@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-6.0.0.tgz#3e0012cb6827319da2706e601a1583e8629a6718"
-  integrity sha512-A1B3Bh1UmL0bidM/YX2NsCOTnGJePL9rO/M+Mw3m9f2gUpfokS0hi5Eah0WSUEWZdZhIZtMjkIYS7mDfOqNHbg==
-
 get-stream@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
@@ -10114,6 +10104,11 @@ get-stream@^5.0.0, get-stream@^5.1.0:
   dependencies:
     pump "^3.0.0"
 
+get-stream@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-6.0.0.tgz#3e0012cb6827319da2706e601a1583e8629a6718"
+  integrity sha512-A1B3Bh1UmL0bidM/YX2NsCOTnGJePL9rO/M+Mw3m9f2gUpfokS0hi5Eah0WSUEWZdZhIZtMjkIYS7mDfOqNHbg==
+
 get-symbol-description@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/get-symbol-description/-/get-symbol-description-1.0.0.tgz#7fdb81c900101fbd564dd5f1a30af5aadc1e58d6"
@@ -10878,7 +10873,7 @@ http-errors@1.7.2:
     statuses ">= 1.5.0 < 2"
     toidentifier "1.0.0"
 
-http-errors@~1.7.2:
+http-errors@1.7.3, http-errors@~1.7.2:
   version "1.7.3"
   resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.3.tgz#6c619e4f9c60308c38519498c14fbb10aacebb06"
   dependencies:
@@ -16495,6 +16490,15 @@ raw-body@2.4.0:
     iconv-lite "0.4.24"
     unpipe "1.0.0"
 
+raw-body@2.4.1:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-2.4.1.tgz#30ac82f98bb5ae8c152e67149dac8d55153b168c"
+  dependencies:
+    bytes "3.1.0"
+    http-errors "1.7.3"
+    iconv-lite "0.4.24"
+    unpipe "1.0.0"
+
 rc@^1.0.1, rc@^1.1.6, rc@^1.2.7, rc@^1.2.8:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"