diff --git a/.woodpecker/lint.yml b/.woodpecker/lint.yml
index 3116a12..7cfd62b 100644
--- a/.woodpecker/lint.yml
+++ b/.woodpecker/lint.yml
@@ -3,4 +3,4 @@ pipeline:
     image: python:slim
     commands:
       - pip install black
-      - black --check --line-length 120 --target-version=py37 .
+      - black --check --line-length 120 --target-version=py39 .
diff --git a/flaschengeist/config.py b/flaschengeist/config.py
index 49a9a2f..3adae22 100644
--- a/flaschengeist/config.py
+++ b/flaschengeist/config.py
@@ -56,7 +56,7 @@ def configure_logger():
         logger_config["handlers"]["wsgi"]["level"] = level
 
     # Read default config
-    logger_config = toml.load(Path(__file__).parent /"logging.toml")
+    logger_config = toml.load(Path(__file__).parent / "logging.toml")
     if "LOGGING" in config:
         # Override with user config
         update_dict(logger_config, config.get("LOGGING"))
diff --git a/flaschengeist/plugins/users/__init__.py b/flaschengeist/plugins/users/__init__.py
index b485f97..eef0041 100644
--- a/flaschengeist/plugins/users/__init__.py
+++ b/flaschengeist/plugins/users/__init__.py
@@ -105,7 +105,7 @@ def frontend(userid, current_session):
         raise Forbidden
 
     if request.method == "POST":
-        if request.content_length > 1024 ** 2:
+        if request.content_length > 1024**2:
             raise BadRequest
         current_session.user_.set_attribute("frontend", request.get_json())
         return no_content()