diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6e4919763..8fea99cd1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -8,7 +8,7 @@ repos:
         # stages: [push]
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: "v1.3.0"
+    rev: "v1.5.0"
     hooks:
       - id: mypy
         exclude: build_helpers
diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index 9836722fd..bdd04ba7f 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -1140,7 +1140,7 @@ class Backtesting:
 
             # 5. Process exit orders.
             order = trade.select_order(trade.exit_side, is_open=True)
-            if self._try_close_open_order(order, trade, current_time, row):
+            if order and self._try_close_open_order(order, trade, current_time, row):
                 sub_trade = order.safe_amount_after_fee != trade.amount
                 if sub_trade:
                     trade.recalc_trade_from_orders()