diff --git a/package-lock.json b/package-lock.json
index 2aad1ea..176f20f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1535,14 +1535,6 @@
         "get-package-type": "^0.1.0",
         "js-yaml": "^3.13.1",
         "resolve-from": "^5.0.0"
-      },
-      "dependencies": {
-        "camelcase": {
-          "version": "5.3.1",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
-          "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
-          "dev": true
-        }
       }
     },
     "@istanbuljs/schema": {
@@ -3705,9 +3697,10 @@
       }
     },
     "camelcase": {
-      "version": "6.2.0",
-      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-6.2.0.tgz",
-      "integrity": "sha512-c7wVvbw3f37nuobQNtgsgG9POC9qMbNuMQmTCqZv23b6MIz0fcYpBiOlv9gEN/hdLdnZTDQhg6e9Dq5M1vKvfg=="
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+      "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
+      "dev": true
     },
     "camelcase-keys": {
       "version": "6.2.2",
@@ -3718,14 +3711,6 @@
         "camelcase": "^5.3.1",
         "map-obj": "^4.0.0",
         "quick-lru": "^4.0.1"
-      },
-      "dependencies": {
-        "camelcase": {
-          "version": "5.3.1",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
-          "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
-          "dev": true
-        }
       }
     },
     "caniuse-lite": {
@@ -14756,14 +14741,6 @@
       "requires": {
         "camelcase": "^5.0.0",
         "decamelize": "^1.2.0"
-      },
-      "dependencies": {
-        "camelcase": {
-          "version": "5.3.1",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
-          "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
-          "dev": true
-        }
       }
     },
     "yauzl": {
diff --git a/package.json b/package.json
index 6d09b63..a9e2830 100644
--- a/package.json
+++ b/package.json
@@ -41,9 +41,8 @@
     "webpack": "^4.0.0 || ^5.0.0"
   },
   "dependencies": {
-    "camelcase": "^6.2.0",
-    "loader-utils": "^2.0.0",
-    "schema-utils": "^3.0.0"
+    "schema-utils": "^3.0.0",
+    "loader-utils": "^2.0.0"
   },
   "devDependencies": {
     "@babel/cli": "^7.11.6",
diff --git a/src/utils.js b/src/utils.js
index 379a368..d9bcb68 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -1,5 +1,4 @@
 import { stringifyRequest } from 'loader-utils';
-import camelcase from 'camelcase';
 
 function getDefaultFilename(filename) {
   if (typeof filename === 'function') {
@@ -49,7 +48,7 @@ function workerGenerator(loaderContext, workerFilename, workerSource, options) {
 
   const esModule =
     typeof options.esModule !== 'undefined' ? options.esModule : true;
-  const fnName = `${camelcase(workerFilename.replace(/\//g, ''))}Worker`;
+  const fnName = `${camelCase(workerFilename)}Worker`;
 
   if (options.inline) {
     const InlineWorkerPath = stringifyRequest(
@@ -114,6 +113,72 @@ const sourceURLWebpackRegex = RegExp(
 );
 /* eslint-enable prefer-template */
 
+/*
+ * Based on https://github.com/sindresorhus/camelcase/tree/v6.2.0
+ * License: https://github.com/sindresorhus/camelcase/blob/v6.2.0/license
+ */
+function camelCase(input1) {
+  let input = input1;
+  input = input.trim();
+
+  if (input.length === 0) {
+    return '';
+  }
+
+  if (input.length === 1) {
+    return input.toLocaleLowerCase();
+  }
+
+  const hasUpperCase = input !== input.toLocaleLowerCase();
+
+  if (hasUpperCase) {
+    let isLastCharLower = false;
+    let isLastCharUpper = false;
+    let isLastLastCharUpper = false;
+
+    for (let i = 0; i < input.length; i++) {
+      const character = input[i];
+
+      if (isLastCharLower && /[\p{Lu}]/u.test(character)) {
+        input = `${input.slice(0, i)}-${input.slice(i)}`;
+        isLastCharLower = false;
+        isLastLastCharUpper = isLastCharUpper;
+        isLastCharUpper = true;
+        i += 1;
+      } else if (
+        isLastCharUpper &&
+        isLastLastCharUpper &&
+        /[\p{Ll}]/u.test(character)
+      ) {
+        input = `${input.slice(0, i - 1)}-${input.slice(i - 1)}`;
+        isLastLastCharUpper = isLastCharUpper;
+        isLastCharUpper = false;
+        isLastCharLower = true;
+      } else {
+        isLastCharLower =
+          character.toLocaleLowerCase() === character &&
+          character.toLocaleUpperCase() !== character;
+        isLastLastCharUpper = isLastCharUpper;
+        isLastCharUpper =
+          character.toLocaleUpperCase() === character &&
+          character.toLocaleLowerCase() !== character;
+      }
+    }
+  }
+
+  input = input.replace(/^[_.\- ]+/, '');
+
+  input = input.toLocaleLowerCase();
+
+  return input
+    .replace(/[_.\- ]+([\p{Alpha}\p{N}_]|$)/gu, (_, p1) =>
+      p1.toLocaleUpperCase()
+    )
+    .replace(/\d+([\p{Alpha}\p{N}_]|$)/gu, (m) => m.toLocaleUpperCase())
+    // NOTE: addition to replace `/` or `\` with ``.
+    .replace(/(\/|\\)/g, '');
+}
+
 export {
   getDefaultFilename,
   getDefaultChunkFilename,