diff --git a/package.json b/package.json
index 5570e3e..099acf2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cowprotocol/app-data",
-  "version": "1.0.0-rc.3",
+  "version": "1.0.0-rc.4",
   "description": "CowProtocol AppData schema definitions",
   "type": "module",
   "source": "src/index.ts",
diff --git a/src/api/appDataToCid.ts b/src/api/appDataToCid.ts
index 68055f9..25d29b9 100644
--- a/src/api/appDataToCid.ts
+++ b/src/api/appDataToCid.ts
@@ -98,9 +98,9 @@ export async function _appDataToCidAux(
  * @returns the IPFS CID v0 of the content
  */
 async function _appDataToCid(fullAppDataJson: string): Promise<string> {
-  const { utils } = await import('ethers')
+  const { keccak256, toUtf8Bytes } = await import('ethers/lib/utils')
 
-  const appDataHex = await utils.keccak256(utils.toUtf8Bytes(fullAppDataJson))
+  const appDataHex = await keccak256(toUtf8Bytes(fullAppDataJson))
   return appDataHexToCid(appDataHex)
 }