diff --git a/src/setAnyTrustFastConfirmerPrepareTransactionRequest.ts b/src/setAnyTrustFastConfirmerPrepareTransactionRequest.ts
index 1bf2c7cc..b6beeb89 100644
--- a/src/setAnyTrustFastConfirmerPrepareTransactionRequest.ts
+++ b/src/setAnyTrustFastConfirmerPrepareTransactionRequest.ts
@@ -17,7 +17,7 @@ export type SetAnyTrustFastConfirmerPrepareTransactionRequestParams<
   TChain extends Chain | undefined,
 > = {
   publicClient: PublicClient<Transport, TChain>;
-  account: PrivateKeyAccount | `0x${string}`;
+  account: Address;
   rollup: Address;
   upgradeExecutor: Address;
   fastConfirmer: Address;