diff --git a/lib/core/qrcode.js b/lib/core/qrcode.js
index 1ea40bed..f76df54b 100644
--- a/lib/core/qrcode.js
+++ b/lib/core/qrcode.js
@@ -11,7 +11,6 @@ const Version = require('./version')
 const FormatInfo = require('./format-info')
 const Mode = require('./mode')
 const Segments = require('./segments')
-const isArray = require('isarray')
 
 /**
  * QRCode for JavaScript
@@ -379,7 +378,7 @@ function createCodewords (bitBuffer, version, errorCorrectionLevel) {
 function createSymbol (data, version, errorCorrectionLevel, maskPattern) {
   let segments
 
-  if (isArray(data)) {
+  if (Array.isArray(data)) {
     segments = Segments.fromArray(data)
   } else if (typeof data === 'string') {
     let estimatedVersion = version
diff --git a/lib/core/version.js b/lib/core/version.js
index b4e7ee66..32b84661 100755
--- a/lib/core/version.js
+++ b/lib/core/version.js
@@ -3,7 +3,6 @@ const ECCode = require('./error-correction-code')
 const ECLevel = require('./error-correction-level')
 const Mode = require('./mode')
 const VersionCheck = require('./version-check')
-const isArray = require('isarray')
 
 // Generator polynomial used to encode version information
 const G18 = (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0)
@@ -122,7 +121,7 @@ exports.getBestVersionForData = function getBestVersionForData (data, errorCorre
 
   const ecl = ECLevel.from(errorCorrectionLevel, ECLevel.M)
 
-  if (isArray(data)) {
+  if (Array.isArray(data)) {
     if (data.length > 1) {
       return getBestVersionForMixedData(data, ecl)
     }
diff --git a/package-lock.json b/package-lock.json
index 07d71e7a..7cbb6965 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2834,11 +2834,6 @@
       "integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=",
       "dev": true
     },
-    "isarray": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/isarray/-/isarray-2.0.5.tgz",
-      "integrity": "sha512-xHjhDr3cNBK0BzdUJSPXZntQUx/mwMS5Rw4A7lPJ90XGAO6ISP/ePDNuo0vhqOZU+UD5JoodwCAAoZQd3FeAKw=="
-    },
     "isexe": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
diff --git a/package.json b/package.json
index a939f8d1..e633cec4 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,6 @@
   "dependencies": {
     "dijkstrajs": "^1.0.1",
     "encode-utf8": "^1.0.3",
-    "isarray": "^2.0.5",
     "pngjs": "^5.0.0",
     "uglify-js": "^3.9.1",
     "yargs": "^15.3.1"