diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index fb0708f..9e156a1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/psf/black
-    rev: 23.12.1
+    rev: 24.1.1
     hooks:
     - id: black
       args: [--line-length=99, --safe]
diff --git a/attune/__init__.py b/attune/__init__.py
index 64f4a14..e582a2d 100644
--- a/attune/__init__.py
+++ b/attune/__init__.py
@@ -1,4 +1,5 @@
 """Tuning tools."""
+
 # flake8: noqa
 
 from .__version__ import *
diff --git a/attune/__version__.py b/attune/__version__.py
index 41d3192..5731bf0 100644
--- a/attune/__version__.py
+++ b/attune/__version__.py
@@ -1,6 +1,5 @@
 """Define Attune version."""
 
-
 # --- import --------------------------------------------------------------------------------------
 
 
diff --git a/attune/_tune_test.py b/attune/_tune_test.py
index 3ca9de5..1890e3b 100644
--- a/attune/_tune_test.py
+++ b/attune/_tune_test.py
@@ -1,6 +1,5 @@
 """Methods for processing OPA 800 tuning data."""
 
-
 import numpy as np
 
 import WrightTools as wt