diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2202349..09da589 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -36,7 +36,7 @@ repos:
 
 
 - repo: https://github.com/psf/black-pre-commit-mirror
-  rev: 23.12.1
+  rev: 24.1.1
   hooks:
     - id: black
 
diff --git a/src/powerbox/__init__.py b/src/powerbox/__init__.py
index b977060..702bb6e 100644
--- a/src/powerbox/__init__.py
+++ b/src/powerbox/__init__.py
@@ -1,4 +1,5 @@
 """A package for creating mocks from input isotropic power spectra."""
+
 try:
     from importlib.metadata import PackageNotFoundError, version
 except ImportError:
diff --git a/src/powerbox/dft.py b/src/powerbox/dft.py
index 06b6bb9..8773347 100644
--- a/src/powerbox/dft.py
+++ b/src/powerbox/dft.py
@@ -24,6 +24,7 @@
 We note that currently, only positive values for b are implemented (in fact, using negative b is consistent, but
 one must be careful that the frequencies returned are descending, rather than ascending).
 """
+
 import warnings
 
 __all__ = ["fft", "ifft", "fftfreq", "fftshift", "ifftshift"]
diff --git a/src/powerbox/tools.py b/src/powerbox/tools.py
index bd3403e..68ecdb7 100644
--- a/src/powerbox/tools.py
+++ b/src/powerbox/tools.py
@@ -3,6 +3,7 @@
 Tools include those for averaging a field angularly, and generating the isotropic
 power spectrum.
 """
+
 import numpy as np
 import warnings
 
diff --git a/tests/test_power.py b/tests/test_power.py
index 5228e33..755c86f 100644
--- a/tests/test_power.py
+++ b/tests/test_power.py
@@ -6,9 +6,7 @@
 def test_power1d():
     p = [0] * 40
     for i in range(40):
-        pb = PowerBox(
-            8001, dim=1, pk=lambda k: 1.0 * k**-2.0, boxlength=1.0, a=0, b=1
-        )
+        pb = PowerBox(8001, dim=1, pk=lambda k: 1.0 * k**-2.0, boxlength=1.0, a=0, b=1)
 
         p[i], k = get_power(pb.delta_x(), pb.boxlength, a=0, b=1)