diff --git a/rocket_twin/drivers/fueling_rocket.py b/rocket_twin/drivers/fueling_rocket.py
index 71b0de0..4477684 100644
--- a/rocket_twin/drivers/fueling_rocket.py
+++ b/rocket_twin/drivers/fueling_rocket.py
@@ -7,7 +7,7 @@
 
 class FuelingRocket(Driver):
     """Driver that simulates the fueling of a rocket.
-    
+
     Inputs
     ------
     name: string,
@@ -22,6 +22,7 @@ class FuelingRocket(Driver):
     Outputs
     ------
     """
+
     def __init__(self, name: str, w_out, dt, owner: Optional["System"] = None, **kwargs):
         super().__init__(name, owner, **kwargs)
 
diff --git a/rocket_twin/systems/station/__init__.py b/rocket_twin/systems/station/__init__.py
index 5e49db6..b485328 100644
--- a/rocket_twin/systems/station/__init__.py
+++ b/rocket_twin/systems/station/__init__.py
@@ -1,3 +1,3 @@
 from rocket_twin.systems.station.station import Station
 
-__all__ = ["Station"]
\ No newline at end of file
+__all__ = ["Station"]
diff --git a/rocket_twin/systems/station/station.py b/rocket_twin/systems/station/station.py
index 05d2857..0f8deeb 100644
--- a/rocket_twin/systems/station/station.py
+++ b/rocket_twin/systems/station/station.py
@@ -12,6 +12,7 @@ class Station(System):
     Outputs
     ------
     """
+
     def setup(self):
         self.add_child(Rocket("rocket"))
         self.add_child(Pipe("pipe"))
@@ -28,4 +29,4 @@ def setup(self):
         # Design methods
         dm = self.add_design_method("start")
         dm.add_unknown("g_tank.weight_p")
-        dm.add_equation("g_tank.weight_p == g_tank.weight_max")
\ No newline at end of file
+        dm.add_equation("g_tank.weight_p == g_tank.weight_max")