diff --git a/examples/miniapps/application-multiple-containers-runtime-overriding/example/__main__.py b/examples/miniapps/application-multiple-containers-runtime-overriding/example/__main__.py
index 2175884b..96b019f1 100644
--- a/examples/miniapps/application-multiple-containers-runtime-overriding/example/__main__.py
+++ b/examples/miniapps/application-multiple-containers-runtime-overriding/example/__main__.py
@@ -3,7 +3,7 @@
 from .containers import Application
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     application = Application()
     config = application.service.config()
     config.build()
diff --git a/examples/miniapps/application-multiple-containers-runtime-overriding/example/containers.py b/examples/miniapps/application-multiple-containers-runtime-overriding/example/containers.py
index 35ec4035..ae29d4ff 100644
--- a/examples/miniapps/application-multiple-containers-runtime-overriding/example/containers.py
+++ b/examples/miniapps/application-multiple-containers-runtime-overriding/example/containers.py
@@ -6,17 +6,17 @@ from .services import ConfigService
 
 
 class Core(containers.DeclarativeContainer):
-    config = providers.Configuration('config')
+    config = providers.Configuration("config")
 
 
 class Storage(containers.DeclarativeContainer):
-    queue = providers.Singleton(lambda: 'Some storage')
+    queue = providers.Singleton(lambda: "Some storage")
 
 
 class Adapter(containers.DeclarativeContainer):
     core = providers.DependenciesContainer(config=providers.Configuration())
     tinydb = providers.Singleton(
-        lambda db_path: f'DB Path=[{db_path}]',
+        lambda db_path: f"DB Path=[{db_path}]",
         db_path=core.config.default.db_path,
     )
 
@@ -25,7 +25,7 @@ class Repository(containers.DeclarativeContainer):
     adapter = providers.DependenciesContainer()
     storage = providers.DependenciesContainer()
     site = providers.Singleton(
-        lambda adapter, queue: f'Adapter=[{adapter}], queue=[{queue}]',
+        lambda adapter, queue: f"Adapter=[{adapter}], queue=[{queue}]",
         adapter=adapter.tinydb,
         queue=storage.queue,
     )
diff --git a/examples/miniapps/application-multiple-containers-runtime-overriding/example/services.py b/examples/miniapps/application-multiple-containers-runtime-overriding/example/services.py
index e0901e13..f791ba54 100644
--- a/examples/miniapps/application-multiple-containers-runtime-overriding/example/services.py
+++ b/examples/miniapps/application-multiple-containers-runtime-overriding/example/services.py
@@ -6,4 +6,4 @@ class ConfigService:
         self._config = config
 
     def build(self):
-        self._config.from_dict({'default': {'db_path': '~/test'}})
+        self._config.from_dict({"default": {"db_path": "~/test"}})
diff --git a/examples/miniapps/application-multiple-containers/example/__main__.py b/examples/miniapps/application-multiple-containers/example/__main__.py
index 08331eeb..adf91ae8 100644
--- a/examples/miniapps/application-multiple-containers/example/__main__.py
+++ b/examples/miniapps/application-multiple-containers/example/__main__.py
@@ -2,7 +2,7 @@
 
 import sys
 
-from dependency_injector.wiring import inject, Provide
+from dependency_injector.wiring import Provide, inject
 
 from .services import UserService, AuthService, PhotoService
 from .containers import Application
diff --git a/examples/miniapps/application-single-container/example/__main__.py b/examples/miniapps/application-single-container/example/__main__.py
index 403e7cf3..5104249b 100644
--- a/examples/miniapps/application-single-container/example/__main__.py
+++ b/examples/miniapps/application-single-container/example/__main__.py
@@ -2,7 +2,7 @@
 
 import sys
 
-from dependency_injector.wiring import inject, Provide
+from dependency_injector.wiring import Provide, inject
 
 from .services import UserService, AuthService, PhotoService
 from .containers import Container