diff --git a/plain-dev/plain/dev/cli.py b/plain-dev/plain/dev/cli.py
index b9ae2be91a..21ca49d214 100644
--- a/plain-dev/plain/dev/cli.py
+++ b/plain-dev/plain/dev/cli.py
@@ -13,7 +13,7 @@
 from .db import cli as db_cli
 from .pid import Pid
 from .services import Services
-from .utils import plainpackage_installed, has_pyproject_toml
+from .utils import has_pyproject_toml, plainpackage_installed
 
 try:
     import tomllib
diff --git a/plain-dev/plain/dev/config.py b/plain-dev/plain/dev/config.py
index 5a86c1406b..902fb45fa5 100644
--- a/plain-dev/plain/dev/config.py
+++ b/plain-dev/plain/dev/config.py
@@ -10,7 +10,9 @@ class Config(PackageConfig):
 
     def ready(self):
         # Symlink the plain package into .plain so we can look at it easily
-        plain_path = Path(importlib.util.find_spec("plain.runtime").origin).parent.parent
+        plain_path = Path(
+            importlib.util.find_spec("plain.runtime").origin
+        ).parent.parent
         if not settings.BOLT_TEMP_PATH.exists():
             settings.BOLT_TEMP_PATH.mkdir()
         src_path = settings.BOLT_TEMP_PATH / "src"
diff --git a/plain-dev/plain/dev/services.py b/plain-dev/plain/dev/services.py
index 867bbe85bd..041c73d1d8 100644
--- a/plain-dev/plain/dev/services.py
+++ b/plain-dev/plain/dev/services.py
@@ -28,7 +28,10 @@ def get_services(root):
             pyproject = tomllib.load(f)
 
         return (
-            pyproject.get("tool", {}).get("plain", {}).get("dev", {}).get("services", {})
+            pyproject.get("tool", {})
+            .get("plain", {})
+            .get("dev", {})
+            .get("services", {})
         )
 
     def __init__(self):
diff --git a/plain-tailwind/plain/tailwind/core.py b/plain-tailwind/plain/tailwind/core.py
index ddf1c845ee..4665d3a1f4 100644
--- a/plain-tailwind/plain/tailwind/core.py
+++ b/plain-tailwind/plain/tailwind/core.py
@@ -106,9 +106,9 @@ def set_version_in_config(self, version):
         with open(pyproject_path) as f:
             config = tomlkit.load(f)
 
-        config.setdefault("tool", {}).setdefault("plain", {}).setdefault("tailwind", {})[
-            "version"
-        ] = version
+        config.setdefault("tool", {}).setdefault("plain", {}).setdefault(
+            "tailwind", {}
+        )["version"] = version
 
         with open(pyproject_path, "w") as f:
             tomlkit.dump(config, f)
diff --git a/plain/plain/internal/files/uploadhandler.py b/plain/plain/internal/files/uploadhandler.py
index c1e54fb093..2901f2ebfb 100644
--- a/plain/plain/internal/files/uploadhandler.py
+++ b/plain/plain/internal/files/uploadhandler.py
@@ -4,7 +4,10 @@
 import os
 from io import BytesIO
 
-from plain.internal.files.uploadedfile import InMemoryUploadedFile, TemporaryUploadedFile
+from plain.internal.files.uploadedfile import (
+    InMemoryUploadedFile,
+    TemporaryUploadedFile,
+)
 from plain.runtime import settings
 from plain.utils.module_loading import import_string
 
diff --git a/plain/plain/internal/handlers/exception.py b/plain/plain/internal/handlers/exception.py
index 1851ea39e6..bb5e81ed6c 100644
--- a/plain/plain/internal/handlers/exception.py
+++ b/plain/plain/internal/handlers/exception.py
@@ -85,7 +85,9 @@ def response_for_exception(request, exc):
 
         # The request logger receives events for any problematic request
         # The security logger receives events for all SuspiciousOperations
-        security_logger = logging.getLogger("plain.security.%s" % exc.__class__.__name__)
+        security_logger = logging.getLogger(
+            "plain.security.%s" % exc.__class__.__name__
+        )
         security_logger.error(
             str(exc),
             exc_info=exc,
diff --git a/plain/plain/preflight/security/base.py b/plain/plain/preflight/security/base.py
index 4e76db7b52..96d3f7b9d4 100644
--- a/plain/plain/preflight/security/base.py
+++ b/plain/plain/preflight/security/base.py
@@ -138,7 +138,9 @@ def _security_middleware():
 
 
 def _xframe_middleware():
-    return "plain.middleware.clickjacking.XFrameOptionsMiddleware" in settings.MIDDLEWARE
+    return (
+        "plain.middleware.clickjacking.XFrameOptionsMiddleware" in settings.MIDDLEWARE
+    )
 
 
 @register(deploy=True)
diff --git a/plain/tests/test_runtime.py b/plain/tests/test_runtime.py
index b856acc0e4..5c138e4392 100644
--- a/plain/tests/test_runtime.py
+++ b/plain/tests/test_runtime.py
@@ -1,5 +1,7 @@
 from plain.runtime import settings
-from plain.runtime import setup as plain_setup  # Rename so pytest doesn't call setup()...
+from plain.runtime import (
+    setup as plain_setup,  # Rename so pytest doesn't call setup()...
+)
 
 
 def test_setup():