diff --git a/lib/fixer.js b/lib/fixer.js
index 9a1ccc9..1c30cad 100644
--- a/lib/fixer.js
+++ b/lib/fixer.js
@@ -2,7 +2,7 @@ var isValidSemver = require('semver/functions/valid')
 var cleanSemver = require('semver/functions/clean')
 var validateLicense = require('validate-npm-package-license')
 var hostedGitInfo = require('hosted-git-info')
-var isBuiltinModule = require('is-core-module')
+var moduleBuiltin = require('node:module')
 var depTypes = ['dependencies', 'devDependencies', 'optionalDependencies']
 var extractDescription = require('./extract_description')
 var url = require('url')
@@ -231,7 +231,7 @@ module.exports = {
       data.name = data.name.trim()
     }
     ensureValidName(data.name, strict, options.allowLegacyCase)
-    if (isBuiltinModule(data.name)) {
+    if (moduleBuiltin.builtinModules.includes(data.name)) {
       this.warn('conflictingName', data.name)
     }
   },
diff --git a/package.json b/package.json
index 7fc803f..93ea2f7 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,6 @@
   },
   "dependencies": {
     "hosted-git-info": "^7.0.0",
-    "is-core-module": "^2.8.1",
     "semver": "^7.3.5",
     "validate-npm-package-license": "^3.0.4"
   },