diff --git a/fireblocks_sdk/sdk.py b/fireblocks_sdk/sdk.py
index 99bc0843..35e26557 100644
--- a/fireblocks_sdk/sdk.py
+++ b/fireblocks_sdk/sdk.py
@@ -1474,6 +1474,7 @@ def create_transaction(
             fee_level=None,
             fail_on_low_fee=None,
             max_fee=None,
+            max_tx_fee=None,
             gas_limit=None,
             idempotency_key=None,
             external_tx_id=None,
@@ -1543,6 +1544,9 @@ def create_transaction(
         if max_fee:
             body["maxFee"] = max_fee
 
+        if max_tx_fee:
+            body["maxTxFee"] = max_tx_fee
+
         if fail_on_low_fee:
             body["failOnLowFee"] = fail_on_low_fee