diff --git a/examples/wiring/example_attribute_annotated.py b/examples/wiring/example_attribute_annotated.py
index 69d2769e..e302e218 100644
--- a/examples/wiring/example_attribute_annotated.py
+++ b/examples/wiring/example_attribute_annotated.py
@@ -11,6 +11,7 @@ class Service:
 
 
 class Container(containers.DeclarativeContainer):
+
     service = providers.Factory(Service)
 
 
@@ -18,6 +19,7 @@ service: Annotated[Service, Provide[Container.service]]
 
 
 class Main:
+
     service: Annotated[Service, Provide[Container.service]]