diff --git a/backtesting/credit_targeting.py b/backtesting/credit_targeting.py
index a0ca7ca..b75416b 100644
--- a/backtesting/credit_targeting.py
+++ b/backtesting/credit_targeting.py
@@ -17,7 +17,9 @@ def create_strategies(credit_target: float, entry_time: str, number_of_contracts
         number_of_contracts = number_of_contracts, 
         spread_width = 50, 
         stop_loss_multiple = 1.00,
-        trade_entry_time = entry_time
+        trade_entry_time = entry_time,
+        entry_slippage = 0.10,
+        exit_slippage = 0.20
     )
     put_spread_strategy = CreditTargetStrategy(
         credit_target = credit_target,
@@ -25,6 +27,8 @@ def create_strategies(credit_target: float, entry_time: str, number_of_contracts
         number_of_contracts = number_of_contracts, 
         spread_width = 50, 
         stop_loss_multiple = 1.00,
-        trade_entry_time = entry_time
+        trade_entry_time = entry_time,
+        entry_slippage = 0.10,
+        exit_slippage = 0.20
     )
     return call_spread_strategy, put_spread_strategy
\ No newline at end of file
diff --git a/backtesting/delta_targeting.py b/backtesting/delta_targeting.py
index 381f42b..23e2470 100644
--- a/backtesting/delta_targeting.py
+++ b/backtesting/delta_targeting.py
@@ -17,7 +17,9 @@ def create_strategies(delta_target: float, entry_time: str, number_of_contracts:
         number_of_contracts = number_of_contracts, 
         spread_width = 50, 
         stop_loss_multiple = 1.00,
-        trade_entry_time = entry_time
+        trade_entry_time = entry_time,
+        entry_slippage = 0.10,
+        exit_slippage = 0.20
     )
     put_spread_strategy = DeltaTargetStrategy(
         delta_target = -delta_target, 
@@ -25,6 +27,8 @@ def create_strategies(delta_target: float, entry_time: str, number_of_contracts:
         number_of_contracts = number_of_contracts, 
         spread_width = 50, 
         stop_loss_multiple = 1.00,
-        trade_entry_time = entry_time
+        trade_entry_time = entry_time,
+        entry_slippage = 0.10,
+        exit_slippage = 0.20
     )
     return call_spread_strategy, put_spread_strategy
\ No newline at end of file
diff --git a/backtesting/option_spread_strategy.py b/backtesting/option_spread_strategy.py
index 9a75511..e5c2f68 100644
--- a/backtesting/option_spread_strategy.py
+++ b/backtesting/option_spread_strategy.py
@@ -8,4 +8,6 @@ class OptionSpreadStrategy:
     number_of_contracts: int
     spread_width: int
     stop_loss_multiple: float
-    trade_entry_time: str
\ No newline at end of file
+    trade_entry_time: str
+    entry_slippage: float
+    exit_slippage: float
\ No newline at end of file