diff --git a/eth_portfolio/_ledgers/address.py b/eth_portfolio/_ledgers/address.py
index 4b5321bb..b080225d 100644
--- a/eth_portfolio/_ledgers/address.py
+++ b/eth_portfolio/_ledgers/address.py
@@ -408,7 +408,7 @@ class AddressTransactionsLedger(AddressLedgerBase[TransactionsList, Transaction]
     _list_type = TransactionsList
     __slots__ = ("cached_thru_nonce", "_queue", "_ready", "_num_workers", "_workers")
 
-    def __init__(self, portfolio_address: "PortfolioAddress", num_workers: int = 10_000):
+    def __init__(self, portfolio_address: "PortfolioAddress", num_workers: int = 1000):
         """
         Initializes the AddressTransactionsLedger instance.