diff --git a/src/lib/discovery/enrtree.ts b/src/lib/discovery/enrtree.ts
index 32b37ccaa9..e87b87946d 100644
--- a/src/lib/discovery/enrtree.ts
+++ b/src/lib/discovery/enrtree.ts
@@ -2,8 +2,9 @@ import * as secp from "@noble/secp256k1";
 import * as base32 from "hi-base32";
 import { fromString } from "uint8arrays/from-string";
 
+import { keccak256 } from "../crypto";
 import { ENR } from "../enr";
-import { keccak256Buf, utf8ToBytes } from "../utils";
+import { utf8ToBytes } from "../utils";
 
 export type ENRRootValues = {
   eRoot: string;
@@ -51,7 +52,7 @@ export class ENRTree {
       const _sig = secp.Signature.fromCompact(signatureBuffer.slice(0, 64));
       isVerified = secp.verify(
         _sig,
-        keccak256Buf(signedComponentBuffer),
+        keccak256(signedComponentBuffer),
         new Uint8Array(decodedPublicKey)
       );
     } catch {
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
index 7e64388a4c..2d0ca74b11 100644
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@@ -1,4 +1,3 @@
-import { keccak256, Message } from "js-sha3";
 import { fromString } from "uint8arrays/from-string";
 import { toString } from "uint8arrays/to-string";
 
@@ -21,13 +20,6 @@ export function hexToBytes(hex: string | Uint8Array): Uint8Array {
 export const bytesToHex = (bytes: Uint8Array): string =>
   toString(bytes, "base16");
 
-/**
- * Return Keccak-256 of the input.
- */
-export function keccak256Buf(message: Message): Uint8Array {
-  return new Uint8Array(keccak256.arrayBuffer(message));
-}
-
 /**
  * Decode byte array to utf-8 string.
  */