diff --git a/compose_viz/cli.py b/compose_viz/cli.py
index 8e4ef9b..8cac6f4 100644
--- a/compose_viz/cli.py
+++ b/compose_viz/cli.py
@@ -5,6 +5,7 @@ from compose_viz import __app_name__, __version__
 from compose_viz.parser import Parser
 from compose_viz.graph import Graph
 
+
 class VisualizationFormats(str, Enum):
     png = "PNG"
     dot = "DOT"