diff --git a/pyproject.toml b/pyproject.toml
index 97603ca..a9a39b8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,6 +62,7 @@ select = [
     "E",   # pycodestyle
     "W",   # pycodestyle
     "I",   # isort
+    "N",   # pep8-naming
     "D",   # pydocstyle
     "UP",  # pyupgrade
     "ANN", # flake8-annotations
@@ -76,6 +77,8 @@ select = [
     "PL",  # Pylint
 ]
 ignore = [
+    "N803",    # invalid-argument-name
+    "N806",    # non-lowercase-variable-in-function
     "D100",    # undocumented-public-module
     "D203",    # one-blank-line-before-class
     "D213",    # multi-line-summary-second-line
diff --git a/src/fast_forward/util/__init__.py b/src/fast_forward/util/__init__.py
index 78374b8..f755e6f 100644
--- a/src/fast_forward/util/__init__.py
+++ b/src/fast_forward/util/__init__.py
@@ -1,6 +1,5 @@
 """.. include:: ../docs/util.md"""  # noqa: D400, D415
 
-
 from typing import TYPE_CHECKING
 
 import numpy as np