diff --git a/index.js b/index.js
index b4384a7..3165ed1 100644
--- a/index.js
+++ b/index.js
@@ -1,12 +1,14 @@
 // @ts-check
 'use strict';
 
-// NeDB on life support, util.isDate is removed in node 23.x, monkeypatch it
-// eslint-disable-next-line global-require
-if (!('isDate' in require('util'))) {
-	// eslint-disable-next-line global-require
-	require('util').isDate = require('util').types.isDate;
+// NeDB on life support
+// some util methods are removed in node 23.x, monkeypatch them
+const util = require('util');
+const patch_methods = [ 'isDate', 'isRegExp' ];
+for (let i = 0; i < patch_methods.length; i++) {
+	util[patch_methods[i]] = util.types[patch_methods[i]];
 }
+util.isArray = Array.isArray;
 
 process.chdir(__dirname);
 require('ts-node').register({ transpileOnly: true });