diff --git a/package-lock.json b/package-lock.json
index 79a83e1..17abfdb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6624,6 +6624,17 @@
         "chardet": "^0.7.0",
         "iconv-lite": "^0.4.24",
         "tmp": "^0.0.33"
+      },
+      "dependencies": {
+        "iconv-lite": {
+          "version": "0.4.24",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+          "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+          "dev": true,
+          "requires": {
+            "safer-buffer": ">= 2.1.2 < 3"
+          }
+        }
       }
     },
     "extglob": {
@@ -7941,9 +7952,9 @@
       }
     },
     "iconv-lite": {
-      "version": "0.4.24",
-      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
-      "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+      "version": "0.5.1",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.5.1.tgz",
+      "integrity": "sha512-ONHr16SQvKZNSqjQT9gy5z24Jw+uqfO02/ngBSBoqChZ+W8qXX7GPRa1RoUnzGADw8K63R1BXUMzarCVQBpY8Q==",
       "requires": {
         "safer-buffer": ">= 2.1.2 < 3"
       }
@@ -15223,8 +15234,20 @@
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-1.0.5.tgz",
       "integrity": "sha512-b5lim54JOPN9HtzvK9HFXvBma/rnfFeqsic0hSpjtDbVxR3dJKLc+KB4V6GgiGOvl7CY/KNh8rxSo9DKQrnUEw==",
+      "dev": true,
       "requires": {
         "iconv-lite": "0.4.24"
+      },
+      "dependencies": {
+        "iconv-lite": {
+          "version": "0.4.24",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+          "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+          "dev": true,
+          "requires": {
+            "safer-buffer": ">= 2.1.2 < 3"
+          }
+        }
       }
     },
     "whatwg-mimetype": {
diff --git a/package.json b/package.json
index d6ba112..8f524f9 100644
--- a/package.json
+++ b/package.json
@@ -42,10 +42,10 @@
   },
   "dependencies": {
     "data-urls": "^2.0.0",
+    "iconv-lite": "^0.5.1",
     "loader-utils": "^2.0.0",
     "schema-utils": "^2.6.6",
-    "source-map": "^0.6.0",
-    "whatwg-encoding": "^1.0.5"
+    "source-map": "^0.6.0"
   },
   "devDependencies": {
     "@babel/cli": "^7.8.4",
diff --git a/src/labels-to-names.js b/src/labels-to-names.js
new file mode 100644
index 0000000..ec23c90
--- /dev/null
+++ b/src/labels-to-names.js
@@ -0,0 +1,209 @@
+const labelToNames = {
+  '866': 'IBM866',
+  'unicode-1-1-utf-8': 'UTF-8',
+  'utf-8': 'UTF-8',
+  utf8: 'UTF-8',
+  cp866: 'IBM866',
+  csibm866: 'IBM866',
+  ibm866: 'IBM866',
+  csisolatin2: 'ISO-8859-2',
+  'iso-8859-2': 'ISO-8859-2',
+  'iso-ir-101': 'ISO-8859-2',
+  'iso8859-2': 'ISO-8859-2',
+  iso88592: 'ISO-8859-2',
+  'iso_8859-2': 'ISO-8859-2',
+  'iso_8859-2:1987': 'ISO-8859-2',
+  l2: 'ISO-8859-2',
+  latin2: 'ISO-8859-2',
+  csisolatin3: 'ISO-8859-3',
+  'iso-8859-3': 'ISO-8859-3',
+  'iso-ir-109': 'ISO-8859-3',
+  'iso8859-3': 'ISO-8859-3',
+  iso88593: 'ISO-8859-3',
+  'iso_8859-3': 'ISO-8859-3',
+  'iso_8859-3:1988': 'ISO-8859-3',
+  l3: 'ISO-8859-3',
+  latin3: 'ISO-8859-3',
+  csisolatin4: 'ISO-8859-4',
+  'iso-8859-4': 'ISO-8859-4',
+  'iso-ir-110': 'ISO-8859-4',
+  'iso8859-4': 'ISO-8859-4',
+  iso88594: 'ISO-8859-4',
+  'iso_8859-4': 'ISO-8859-4',
+  'iso_8859-4:1988': 'ISO-8859-4',
+  l4: 'ISO-8859-4',
+  latin4: 'ISO-8859-4',
+  csisolatincyrillic: 'ISO-8859-5',
+  cyrillic: 'ISO-8859-5',
+  'iso-8859-5': 'ISO-8859-5',
+  'iso-ir-144': 'ISO-8859-5',
+  'iso8859-5': 'ISO-8859-5',
+  iso88595: 'ISO-8859-5',
+  'iso_8859-5': 'ISO-8859-5',
+  'iso_8859-5:1988': 'ISO-8859-5',
+  arabic: 'ISO-8859-6',
+  'asmo-708': 'ISO-8859-6',
+  csiso88596e: 'ISO-8859-6',
+  csiso88596i: 'ISO-8859-6',
+  csisolatinarabic: 'ISO-8859-6',
+  'ecma-114': 'ISO-8859-6',
+  'iso-8859-6': 'ISO-8859-6',
+  'iso-8859-6-e': 'ISO-8859-6',
+  'iso-8859-6-i': 'ISO-8859-6',
+  'iso-ir-127': 'ISO-8859-6',
+  'iso8859-6': 'ISO-8859-6',
+  iso88596: 'ISO-8859-6',
+  'iso_8859-6': 'ISO-8859-6',
+  'iso_8859-6:1987': 'ISO-8859-6',
+  csisolatingreek: 'ISO-8859-7',
+  'ecma-118': 'ISO-8859-7',
+  elot_928: 'ISO-8859-7',
+  greek: 'ISO-8859-7',
+  greek8: 'ISO-8859-7',
+  'iso-8859-7': 'ISO-8859-7',
+  'iso-ir-126': 'ISO-8859-7',
+  'iso8859-7': 'ISO-8859-7',
+  iso88597: 'ISO-8859-7',
+  'iso_8859-7': 'ISO-8859-7',
+  'iso_8859-7:1987': 'ISO-8859-7',
+  sun_eu_greek: 'ISO-8859-7',
+  csiso88598e: 'ISO-8859-8',
+  csisolatinhebrew: 'ISO-8859-8',
+  hebrew: 'ISO-8859-8',
+  'iso-8859-8': 'ISO-8859-8',
+  'iso-8859-8-e': 'ISO-8859-8',
+  'iso-ir-138': 'ISO-8859-8',
+  'iso8859-8': 'ISO-8859-8',
+  iso88598: 'ISO-8859-8',
+  'iso_8859-8': 'ISO-8859-8',
+  'iso_8859-8:1988': 'ISO-8859-8',
+  visual: 'ISO-8859-8',
+  csisolatin6: 'ISO-8859-10',
+  'iso-8859-10': 'ISO-8859-10',
+  'iso-ir-157': 'ISO-8859-10',
+  'iso8859-10': 'ISO-8859-10',
+  iso885910: 'ISO-8859-10',
+  l6: 'ISO-8859-10',
+  latin6: 'ISO-8859-10',
+  'iso-8859-13': 'ISO-8859-13',
+  'iso8859-13': 'ISO-8859-13',
+  iso885913: 'ISO-8859-13',
+  'iso-8859-14': 'ISO-8859-14',
+  'iso8859-14': 'ISO-8859-14',
+  iso885914: 'ISO-8859-14',
+  csisolatin9: 'ISO-8859-15',
+  'iso-8859-15': 'ISO-8859-15',
+  'iso8859-15': 'ISO-8859-15',
+  iso885915: 'ISO-8859-15',
+  'iso_8859-15': 'ISO-8859-15',
+  l9: 'ISO-8859-15',
+  'iso-8859-16': 'ISO-8859-16',
+  cskoi8r: 'KOI8-R',
+  koi: 'KOI8-R',
+  koi8: 'KOI8-R',
+  'koi8-r': 'KOI8-R',
+  koi8_r: 'KOI8-R',
+  'koi8-ru': 'KOI8-U',
+  'koi8-u': 'KOI8-U',
+  csmacintosh: 'macintosh',
+  mac: 'macintosh',
+  macintosh: 'macintosh',
+  'x-mac-roman': 'macintosh',
+  'dos-874': 'windows-874',
+  'iso-8859-11': 'windows-874',
+  'iso8859-11': 'windows-874',
+  iso885911: 'windows-874',
+  'tis-620': 'windows-874',
+  'windows-874': 'windows-874',
+  cp1250: 'windows-1250',
+  'windows-1250': 'windows-1250',
+  'x-cp1250': 'windows-1250',
+  cp1251: 'windows-1251',
+  'windows-1251': 'windows-1251',
+  'x-cp1251': 'windows-1251',
+  'ansi_x3.4-1968': 'windows-1252',
+  ascii: 'windows-1252',
+  cp1252: 'windows-1252',
+  cp819: 'windows-1252',
+  csisolatin1: 'windows-1252',
+  ibm819: 'windows-1252',
+  'iso-8859-1': 'windows-1252',
+  'iso-ir-100': 'windows-1252',
+  'iso8859-1': 'windows-1252',
+  iso88591: 'windows-1252',
+  'iso_8859-1': 'windows-1252',
+  'iso_8859-1:1987': 'windows-1252',
+  l1: 'windows-1252',
+  latin1: 'windows-1252',
+  'us-ascii': 'windows-1252',
+  'windows-1252': 'windows-1252',
+  'x-cp1252': 'windows-1252',
+  cp1253: 'windows-1253',
+  'windows-1253': 'windows-1253',
+  'x-cp1253': 'windows-1253',
+  cp1254: 'windows-1254',
+  csisolatin5: 'windows-1254',
+  'iso-8859-9': 'windows-1254',
+  'iso-ir-148': 'windows-1254',
+  'iso8859-9': 'windows-1254',
+  iso88599: 'windows-1254',
+  'iso_8859-9': 'windows-1254',
+  'iso_8859-9:1989': 'windows-1254',
+  l5: 'windows-1254',
+  latin5: 'windows-1254',
+  'windows-1254': 'windows-1254',
+  'x-cp1254': 'windows-1254',
+  cp1255: 'windows-1255',
+  'windows-1255': 'windows-1255',
+  'x-cp1255': 'windows-1255',
+  cp1256: 'windows-1256',
+  'windows-1256': 'windows-1256',
+  'x-cp1256': 'windows-1256',
+  cp1257: 'windows-1257',
+  'windows-1257': 'windows-1257',
+  'x-cp1257': 'windows-1257',
+  cp1258: 'windows-1258',
+  'windows-1258': 'windows-1258',
+  'x-cp1258': 'windows-1258',
+  chinese: 'GBK',
+  csgb2312: 'GBK',
+  csiso58gb231280: 'GBK',
+  gb2312: 'GBK',
+  gb_2312: 'GBK',
+  'gb_2312-80': 'GBK',
+  gbk: 'GBK',
+  'iso-ir-58': 'GBK',
+  'x-gbk': 'GBK',
+  gb18030: 'gb18030',
+  big5: 'Big5',
+  'big5-hkscs': 'Big5',
+  'cn-big5': 'Big5',
+  csbig5: 'Big5',
+  'x-x-big5': 'Big5',
+  cseucpkdfmtjapanese: 'EUC-JP',
+  'euc-jp': 'EUC-JP',
+  'x-euc-jp': 'EUC-JP',
+  csshiftjis: 'Shift_JIS',
+  ms932: 'Shift_JIS',
+  ms_kanji: 'Shift_JIS',
+  'shift-jis': 'Shift_JIS',
+  shift_jis: 'Shift_JIS',
+  sjis: 'Shift_JIS',
+  'windows-31j': 'Shift_JIS',
+  'x-sjis': 'Shift_JIS',
+  cseuckr: 'EUC-KR',
+  csksc56011987: 'EUC-KR',
+  'euc-kr': 'EUC-KR',
+  'iso-ir-149': 'EUC-KR',
+  korean: 'EUC-KR',
+  'ks_c_5601-1987': 'EUC-KR',
+  'ks_c_5601-1989': 'EUC-KR',
+  ksc5601: 'EUC-KR',
+  ksc_5601: 'EUC-KR',
+  'windows-949': 'EUC-KR',
+  'utf-16be': 'UTF-16BE',
+  'utf-16': 'UTF-16LE',
+  'utf-16le': 'UTF-16LE',
+};
+
+export default labelToNames;
diff --git a/src/utils.js b/src/utils.js
index aa1336c..175c6b4 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -3,10 +3,13 @@ import urlUtils from 'url';
 
 import sourceMap from 'source-map';
 import parseDataURL from 'data-urls';
-import { labelToName, decode } from 'whatwg-encoding';
+
+import { decode } from 'iconv-lite';
 
 import { urlToRequest } from 'loader-utils';
 
+import labelsToNames from './labels-to-names';
+
 // Matches only the last occurrence of sourceMappingURL
 const innerRegex = /\s*[#@]\s*sourceMappingURL\s*=\s*([^\s'"]*)\s*/;
 
@@ -29,6 +32,12 @@ const sourceMappingURLRegex = RegExp(
 );
 /* eslint-enable prefer-template */
 
+function labelToName(label) {
+  const labelLowercase = String(label).trim().toLowerCase();
+
+  return labelsToNames[labelLowercase] || null;
+}
+
 async function flattenSourceMap(map) {
   const consumer = await new sourceMap.SourceMapConsumer(map);
   const generatedMap = map.file