diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 21e6b87..945c167 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -16,6 +16,6 @@ repos:
       - id: check-added-large-files
   # Code formatting with black
   - repo: https://github.com/psf/black
-    rev: 24.10.0
+    rev: 25.1.0
     hooks:
       - id: black
diff --git a/tests/test_api.py b/tests/test_api.py
index e656962..4822368 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -16,8 +16,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 
-"""SalishSeaCmd combine sub-command plug-in unit tests
-"""
+"""SalishSeaCmd combine sub-command plug-in unit tests"""
 from unittest.mock import Mock, patch
 
 import cliff.app
diff --git a/tests/test_prepare.py b/tests/test_prepare.py
index 89e2709..792e50e 100644
--- a/tests/test_prepare.py
+++ b/tests/test_prepare.py
@@ -16,8 +16,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 
-"""SalishSeaCmd prepare sub-command plug-in unit tests
-"""
+"""SalishSeaCmd prepare sub-command plug-in unit tests"""
 import os
 from pathlib import Path
 from unittest.mock import call, Mock, patch
diff --git a/tests/test_run.py b/tests/test_run.py
index 532b0e0..a9e98bc 100644
--- a/tests/test_run.py
+++ b/tests/test_run.py
@@ -16,8 +16,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 
-"""SalishSeaCmd run sub-command plug-in unit tests
-"""
+"""SalishSeaCmd run sub-command plug-in unit tests"""
 import logging
 import os
 import shlex
diff --git a/tests/test_split_results.py b/tests/test_split_results.py
index e887aae..97fd092 100644
--- a/tests/test_split_results.py
+++ b/tests/test_split_results.py
@@ -16,8 +16,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 
-"""SalishSeaCmd split-results sub-command plug-in unit tests
-"""
+"""SalishSeaCmd split-results sub-command plug-in unit tests"""
 from pathlib import Path
 from types import SimpleNamespace
 from unittest.mock import Mock, patch