diff --git a/package.json b/package.json
index adb9150..9a48c85 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "url": "https://github.com/NaturalCycles/nodejs-lib"
   },
   "engines": {
-    "node": ">=18.12.0"
+    "node": ">=20.12.0"
   },
   "description": "Standard library for Node.js",
   "author": "Natural Cycles Team",
diff --git a/src/security/hash.util.ts b/src/security/hash.util.ts
index 5845fbb..eab21d3 100644
--- a/src/security/hash.util.ts
+++ b/src/security/hash.util.ts
@@ -22,24 +22,14 @@ export function hash(
   algorithm: string,
   outputEncoding: BinaryToTextEncoding = 'hex',
 ): string {
-  // todo: cleanup after @types/node is updated
   // https://github.com/nodejs/node/blob/main/doc/changelogs/CHANGELOG_V20.md#crypto-implement-cryptohash
-  // Node 20.12+
-  if ((crypto as any).hash) {
-    return (crypto as any).hash(algorithm, s, outputEncoding)
-  }
-
-  return crypto.createHash(algorithm).update(s).digest(outputEncoding)
+  // Note: crypto.hash is Node 20.12+
+  return crypto.hash(algorithm, s, outputEncoding)
 }
 
 export function hashAsBuffer(s: string | Buffer, algorithm: string): Buffer {
-  // todo: cleanup after @types/node is updated
-  // Node 20.12+
-  if ((crypto as any).hash) {
-    return (crypto as any).hash(algorithm, s, 'buffer')
-  }
-
-  return crypto.createHash(algorithm).update(s).digest()
+  // Note: crypto.hash is Node 20.12+
+  return crypto.hash(algorithm, s, 'buffer')
 }
 
 export function base64(s: string | Buffer): Base64String {