diff --git a/cw_ethereum/lib/ethereum_wallet.dart b/cw_ethereum/lib/ethereum_wallet.dart
index 46625aa76..c4ce9748e 100644
--- a/cw_ethereum/lib/ethereum_wallet.dart
+++ b/cw_ethereum/lib/ethereum_wallet.dart
@@ -265,4 +265,6 @@ abstract class EthereumWalletBase
 
     return EthPrivateKey.fromHex(HEX.encode(addressAtIndex.privateKey as List<int>));
   }
+
+  Future<void>? updateBalance() => null;
 }