diff --git a/lib/web/imageRouter/index.js b/lib/web/imageRouter/index.js
index ee123867c..07dedb083 100644
--- a/lib/web/imageRouter/index.js
+++ b/lib/web/imageRouter/index.js
@@ -3,7 +3,6 @@
 const Router = require('express').Router
 const formidable = require('formidable')
 const path = require('path')
-const FileType = require('file-type')
 const fs = require('fs')
 const os = require('os')
 const rimraf = require('rimraf')
@@ -17,7 +16,8 @@ const imageRouter = (module.exports = Router())
 
 async function checkUploadType (filePath) {
   const extension = path.extname(filePath).toLowerCase()
-  let typeFromMagic = await FileType.fromFile(filePath)
+  const FileType = await import('file-type')
+  let typeFromMagic = await FileType.fileTypeFromFile(filePath)
   if (extension === '.svg' && (typeFromMagic === undefined || typeFromMagic.mime === 'application/xml')) {
     const fileContent = fs.readFileSync(filePath)
     if (isSvg(fileContent)) {
diff --git a/package.json b/package.json
index 2f4d7c4c8..f1053b7e4 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "ejs": "^3.0.0",
     "express": ">=4.14",
     "express-session": "^1.14.2",
-    "file-type": "^16.1.0",
+    "file-type": "^17.0.0",
     "formidable": "^1.0.17",
     "graceful-fs": "^4.1.11",
     "helmet": "^4.5.0",
@@ -110,7 +110,7 @@
     "**/request": "^2.88.0"
   },
   "engines": {
-    "node": "12.x || 14.x || 16.x"
+    "node": "^12.20.0 || ^14.13.1 || 16.x"
   },
   "bugs": "https://github.com/hedgedoc/hedgedoc/issues",
   "keywords": [
diff --git a/yarn.lock b/yarn.lock
index 52dfd8ad0..5976f4506 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4472,13 +4472,13 @@ file-saver@2.0.5:
   resolved "https://registry.yarnpkg.com/file-saver/-/file-saver-2.0.5.tgz#d61cfe2ce059f414d899e9dd6d4107ee25670c38"
   integrity sha512-P9bmyZ3h/PRG+Nzga+rbdI4OEpNDzAVyy74uVO9ATgzLK6VtAsYybF/+TOCvrc0MO793d6+42lLyZTw7/ArVzA==
 
-file-type@^16.1.0:
-  version "16.5.3"
-  resolved "https://registry.yarnpkg.com/file-type/-/file-type-16.5.3.tgz#474b7e88c74724046abb505e9b8ed4db30c4fc06"
-  integrity sha512-uVsl7iFhHSOY4bEONLlTK47iAHtNsFHWP5YE4xJfZ4rnX7S1Q3wce09XgqSC7E/xh8Ncv/be1lNoyprlUH/x6A==
+file-type@^17.0.0:
+  version "17.0.0"
+  resolved "https://registry.yarnpkg.com/file-type/-/file-type-17.0.0.tgz#83878c2e1e98fc1eaa60e5a419e3a32615517547"
+  integrity sha512-AncQKsnXTRHHEn3EwMobGwaQ84FOrLfy9GbbbeZ0mZC9FROiesHdycyG/hoPfDoTf32CzFUQLR1HsByOW92X2g==
   dependencies:
-    readable-web-to-node-stream "^3.0.0"
-    strtok3 "^6.2.4"
+    readable-web-to-node-stream "^3.0.2"
+    strtok3 "7.0.0-alpha.4"
     token-types "^4.1.1"
 
 file-uri-to-path@1.0.0:
@@ -8148,10 +8148,10 @@ pdfobject@^2.0.201604172:
   resolved "https://registry.yarnpkg.com/pdfobject/-/pdfobject-2.2.7.tgz#487ec2ab425c9385f2d80eea5890d632f503cac2"
   integrity sha512-9ptX0XNCtpYz0hNWz6j/1O4rvJkcPR2rct3UDBhs8ZEosOO67dCEAu4VpBvVJ64SMh8Mrn9pWWODnyLjgFQYgg==
 
-peek-readable@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/peek-readable/-/peek-readable-4.0.1.tgz#9a045f291db254111c3412c1ce4fec27ddd4d202"
-  integrity sha512-7qmhptnR0WMSpxT5rMHG9bW/mYSR1uqaPFj2MHvT+y/aOUu6msJijpKt5SkTDKySwg65OWG2JwTMBlgcbwMHrQ==
+peek-readable@^5.0.0-alpha.4:
+  version "5.0.0-alpha.4"
+  resolved "https://registry.yarnpkg.com/peek-readable/-/peek-readable-5.0.0-alpha.4.tgz#bb609b7e062288ca84970cd2c39f7783173d244b"
+  integrity sha512-oQrEBW4g7Dsh4z9cQRJEpx56kiQLgNQr6gQni3GxzNYst4o64cL4RhjSLEmyvojA3qxfA5RUod2DFPAaZ+maPw==
 
 performance-now@^2.1.0:
   version "2.1.0"
@@ -8869,7 +8869,7 @@ readable-stream@~2.0.0:
     string_decoder "~0.10.x"
     util-deprecate "~1.0.1"
 
-readable-web-to-node-stream@^3.0.0:
+readable-web-to-node-stream@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/readable-web-to-node-stream/-/readable-web-to-node-stream-3.0.2.tgz#5d52bb5df7b54861fd48d015e93a2cb87b3ee0bb"
   integrity sha512-ePeK6cc1EcKLEhJFt/AebMCLL+GgSKhuygrZ/GLaKZYEecIgIECf4UaUuaByiGtzckwR4ain9VzUh95T1exYGw==
@@ -10449,13 +10449,13 @@ strnum@^1.0.4:
   resolved "https://registry.yarnpkg.com/strnum/-/strnum-1.0.4.tgz#e97e36a7d6ba9f93d0d6b496b2ed0678d422832b"
   integrity sha512-lMzNMfDpaQOLt4B2mEbfzYS0+T7dvCXeojnlGf6f1AygvWDMcWyXYaLbyICfjVu29sErR8fnRagQfBW/N/hGgw==
 
-strtok3@^6.2.4:
-  version "6.2.4"
-  resolved "https://registry.yarnpkg.com/strtok3/-/strtok3-6.2.4.tgz#302aea64c0fa25d12a0385069ba66253fdc38a81"
-  integrity sha512-GO8IcFF9GmFDvqduIspUBwCzCbqzegyVKIsSymcMgiZKeCfrN9SowtUoi8+b59WZMAjIzVZic/Ft97+pynR3Iw==
+strtok3@7.0.0-alpha.4:
+  version "7.0.0-alpha.4"
+  resolved "https://registry.yarnpkg.com/strtok3/-/strtok3-7.0.0-alpha.4.tgz#2892c53d90118bde1e5526fc8ce93b1a8acc69d5"
+  integrity sha512-PwgcN4vvEoVoHOwVsnp3tWc+wrliwMh/Yr00wZ+LuFdWRHELZEDAn3+dIqCauj4GO1sLO8aM3yDA6p/PnY+3Kw==
   dependencies:
     "@tokenizer/token" "^0.3.0"
-    peek-readable "^4.0.1"
+    peek-readable "^5.0.0-alpha.4"
 
 stylehacks@^5.0.1:
   version "5.0.1"