diff --git a/.github/workflows/pythonapp.yml b/.github/workflows/pythonapp.yml
index a923b3b..fe71d6a 100644
--- a/.github/workflows/pythonapp.yml
+++ b/.github/workflows/pythonapp.yml
@@ -40,4 +40,4 @@ jobs:
       - name: Publish package to PyPI
         uses: pypa/gh-action-pypi-publish@v1.13.0
         with:
-          attestations: true
\ No newline at end of file
+          attestations: true
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6f1de35..2519efb 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -35,13 +35,13 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 25.12.0
+    rev: 26.1.0
     hooks:
       - id: black
         language_version: python3.13
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.14.11
+    rev: v0.14.13
     hooks:
       - id: ruff
         args: ["--fix", "--exit-non-zero-on-fix"]
@@ -59,7 +59,7 @@ repos:
         args: ["--py39-plus"]
 
   - repo: https://github.com/PyCQA/bandit
-    rev: 1.9.2
+    rev: 1.9.3
     hooks:
       - id: bandit
         args: ["-c", "bandit.yml"]
diff --git a/objutils/hexdump.py b/objutils/hexdump.py
index 2f81939..9b6ffcb 100644
--- a/objutils/hexdump.py
+++ b/objutils/hexdump.py
@@ -36,7 +36,7 @@
 
 
 def isprintable(ch: int) -> bool:
-    return 0x1F < ch < 0x7f
+    return 0x1F < ch < 0x7F
 
 
 def unpack(*args: int) -> Sequence[int]:
diff --git a/objutils/tests/test_shf.py b/objutils/tests/test_shf.py
index 4ebf154..b866608 100644
--- a/objutils/tests/test_shf.py
+++ b/objutils/tests/test_shf.py
@@ -84,9 +84,7 @@ def test_dump_shf1():
     sr = loads("srec", SREC1)
     img = Image([sr[0]])
     shf = dumps("shf", img)
-    assert (
-        shf
-        == """<?xml version="1.0" encoding="UTF-8"?>
+    assert shf == """<?xml version="1.0" encoding="UTF-8"?>
 <dump name="SHF dump by objutils" blocks="0001">
     <block name="Section #0000" address="0000b000" word_size="01" length="0000003c" checksum="9a8e02926903975688683136d71ff38ca9fc9847">
         57 6f 77 21 20 44 69 64 20 79 6f 75 20 72 65 61
@@ -95,4 +93,3 @@ def test_dump_shf1():
         6f 20 72 65 61 64 20 74 68 69 73 3f
     </block>
 </dump>"""
-    )
diff --git a/pyproject.toml b/pyproject.toml
index f13f788..da5c8e2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -130,4 +130,3 @@ push = false
 "objutils/version.py" = [
     '__version__ = "{version}"',
 ]
-