diff --git a/adafruit_display_shapes/sparkline.py b/adafruit_display_shapes/sparkline.py
index 362a345..22e34d8 100644
--- a/adafruit_display_shapes/sparkline.py
+++ b/adafruit_display_shapes/sparkline.py
@@ -101,6 +101,7 @@ def clear_values(self) -> None:
 
     def add_value(self, value: float, update: bool = True) -> None:
         """Add a value to the sparkline.
+
         :param value: The value to be added to the sparkline
         :param update: trigger recreation of primitives