diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1f71303b..6653d6f2 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -19,7 +19,7 @@ repos:
         args: [--fix, --ignore-noqa]
 
   - repo: https://github.com/psf/black
-    rev: 23.12.1
+    rev: 24.3.0
     hooks:
       - id: black
       - id: black-jupyter
diff --git a/tests/__init__.py b/tests/__init__.py
index 554896f8..61492edc 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,4 +1,5 @@
 """Unit test package for xbitinfo."""
+
 import importlib
 from distutils import version
 
diff --git a/tests/test_get_bitinformation.py b/tests/test_get_bitinformation.py
index 0a38ca0f..68b53804 100644
--- a/tests/test_get_bitinformation.py
+++ b/tests/test_get_bitinformation.py
@@ -1,4 +1,5 @@
 """Tests for `xbitinfo` package."""
+
 import os
 
 import numpy as np
diff --git a/tests/test_get_keepbits.py b/tests/test_get_keepbits.py
index cec0b99f..cb24cd13 100644
--- a/tests/test_get_keepbits.py
+++ b/tests/test_get_keepbits.py
@@ -1,4 +1,5 @@
 """Tests for `xbitinfo.get_keepbits`."""
+
 import pytest
 import xarray as xr