diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 7640fded..e380a3c3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -36,13 +36,13 @@ repos:
 #     ]
 
 - repo: https://github.com/PyCQA/isort
-  rev: 5.13.2
+  rev: 6.0.0
   hooks:
   - id: isort
     args: ["--profile", "black"]
 
 - repo: https://github.com/psf/black
-  rev: 24.10.0
+  rev: 25.1.0
   hooks:
   - id: black
     language_version: python3
diff --git a/setup.py b/setup.py
index e350ed73..25c38164 100644
--- a/setup.py
+++ b/setup.py
@@ -1,10 +1,10 @@
 """
-    Setup file for grelu.
-    Use setup.cfg to configure your project.
+Setup file for grelu.
+Use setup.cfg to configure your project.
 
-    This file was generated with PyScaffold 4.4.1.
-    PyScaffold helps you to put up the scaffold of your new Python project.
-    Learn more under: https://pyscaffold.org/
+This file was generated with PyScaffold 4.4.1.
+PyScaffold helps you to put up the scaffold of your new Python project.
+Learn more under: https://pyscaffold.org/
 """
 
 from setuptools import setup
diff --git a/src/grelu/utils.py b/src/grelu/utils.py
index b466c175..c4c967a7 100644
--- a/src/grelu/utils.py
+++ b/src/grelu/utils.py
@@ -126,7 +126,7 @@ def get_transform_func(
 
 
 def make_list(
-    x: Optional[Union[pd.Series, np.ndarray, Tensor, Sequence, int, float, str]]
+    x: Optional[Union[pd.Series, np.ndarray, Tensor, Sequence, int, float, str]],
 ) -> list:
     """
     Convert various kinds of inputs into a list
diff --git a/tests/conftest.py b/tests/conftest.py
index dedd8007..c3c78e4a 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,10 +1,10 @@
 """
-    Dummy conftest.py for grelu.
+Dummy conftest.py for grelu.
 
-    If you don't know what this is for, just leave it empty.
-    Read more about conftest.py under:
-    - https://docs.pytest.org/en/stable/fixture.html
-    - https://docs.pytest.org/en/stable/writing_plugins.html
+If you don't know what this is for, just leave it empty.
+Read more about conftest.py under:
+- https://docs.pytest.org/en/stable/fixture.html
+- https://docs.pytest.org/en/stable/writing_plugins.html
 """
 
 # import pytest