diff --git a/requirements_dev.txt b/requirements_dev.txt
index 2a860937..d6c04159 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -2,7 +2,7 @@ bidict==0.23.1
 pika==1.3.2
 prometheus_client==0.21.0
 pytest==9.0.3
-pytest-cov==6.0.0
+pytest-cov==7.1.0
 pytest-mock==3.14.0
 pytest-timeout==2.3.1
 stomp-py==8.1.2
diff --git a/src/workflows/transport/middleware/__init__.py b/src/workflows/transport/middleware/__init__.py
index 1ace0ff0..a8d8f76b 100644
--- a/src/workflows/transport/middleware/__init__.py
+++ b/src/workflows/transport/middleware/__init__.py
@@ -236,8 +236,10 @@ def wrap(f: Callable):
     @functools.wraps(f)
     def wrapper(self, *args, **kwargs):
         return functools.reduce(
-            lambda call_next, m: lambda *args, **kwargs: getattr(m, f.__name__)(
-                call_next, *args, **kwargs
+            lambda call_next, m: (
+                lambda *args, **kwargs: getattr(m, f.__name__)(
+                    call_next, *args, **kwargs
+                )
             ),
             reversed(self.middleware),
             lambda *args, **kwargs: f(self, *args, **kwargs),
diff --git a/tests/services/test_common_service.py b/tests/services/test_common_service.py
index 313f57fa..91427a97 100644
--- a/tests/services/test_common_service.py
+++ b/tests/services/test_common_service.py
@@ -373,8 +373,10 @@ def initializing():
     # Traceback should have been sent to log
     log_msgs = list(
         filter(
-            lambda c: c[0][0] == {"band": "log", "payload": mock.ANY}
-            and c[0][0]["payload"].levelname == "CRITICAL",
+            lambda c: (
+                c[0][0] == {"band": "log", "payload": mock.ANY}
+                and c[0][0]["payload"].levelname == "CRITICAL"
+            ),
             fe_pipe.send.call_args_list,
         )
     )