diff --git a/stock-lab/app/main.py b/stock-lab/app/main.py
index 5bd3653..20c9cda 100644
--- a/stock-lab/app/main.py
+++ b/stock-lab/app/main.py
@@ -371,6 +371,7 @@ class SellHistoryRequest(BaseModel):
     quantity: int
     avg_price: float
     sell_price: float
+    commission: float = 0
     buy_amount: float
     sell_amount: float
     realized_profit: float