diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f4b3c7a..1ae4ff3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.0.1
+    rev: v6.0.0
     hooks:
       - id: check-added-large-files
       - id: check-merge-conflict
@@ -11,31 +11,31 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v2.4.1
+    rev: v4.0.0-alpha.8
     hooks:
       - id: prettier
 
-  - repo: https://github.com/psf/black
-    rev: 21.9b0
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 25.12.0
     hooks:
       - id: black
 
   - repo: https://github.com/pycqa/isort
-    rev: 5.9.3
+    rev: 7.0.0
     hooks:
       - id: isort
 
   - repo: https://github.com/pycqa/flake8
-    rev: 3.9.2
+    rev: 7.3.0
     hooks:
       - id: flake8
 
   - repo: https://github.com/adrienverge/yamllint.git
-    rev: v1.26.3
+    rev: v1.37.1
     hooks:
       - id: yamllint
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.910
+    rev: v1.19.0
     hooks:
       - id: mypy
diff --git a/pyuhoo/util.py b/pyuhoo/util.py
index 36db5d4..d970c5c 100644
--- a/pyuhoo/util.py
+++ b/pyuhoo/util.py
@@ -1,4 +1,5 @@
 """Define various utility functions."""
+
 import json
 from codecs import decode, encode
 from hashlib import md5, sha256