diff --git a/src/science_signal/__init__.py b/src/science_signal/__init__.py
index 5bf8b55..0d01e6d 100644
--- a/src/science_signal/__init__.py
+++ b/src/science_signal/__init__.py
@@ -51,4 +51,5 @@ def to_signal(variable: NDArray[float64]):
         variable[1],
     )
 
+
 from science_signal.signal import Signal
diff --git a/src/science_signal/signal.py b/src/science_signal/signal.py
index e04d89c..721c586 100644
--- a/src/science_signal/signal.py
+++ b/src/science_signal/signal.py
@@ -67,7 +67,9 @@ class Signal:
             cos(self.y),
         )
 
-    def cut(self, start: None | float = None, end: None | float = None) -> "Signal":
+    def cut(
+        self, start: None | float = None, end: None | float = None
+    ) -> "Signal":
         """
         Cut signal from a start x to an end x
         """