Bump tools, add actionlint.

.github/workflows/checks.yml

@@ -11,7 +11,7 @@ jobs:
         - python-version: 3.14
           env:
             TOXENV: pylint
-        - python-version: 3.13  # Keep in sync with .readthedocs.yml
+        - python-version: 3.14  # Keep in sync with .readthedocs.yml
           env:
             TOXENV: docs
         - python-version: 3.14
@@ -22,7 +22,7 @@ jobs:
             TOXENV: twinecheck
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
@@ -39,5 +39,5 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: pre-commit/action@v3.0.1

.github/workflows/publish.yml

@@ -16,7 +16,7 @@ jobs:
       id-token: write
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python
       uses: actions/setup-python@v6

.github/workflows/tests-macos.yml

@@ -10,7 +10,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6

.github/workflows/tests-ubuntu.yml

@@ -10,7 +10,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "pypy3.11"]
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Install system libraries
       if: contains(matrix.python-version, 'pypy')

.github/workflows/tests-windows.yml

@@ -10,7 +10,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6

.pre-commit-config.yaml

@@ -10,7 +10,7 @@ repos:
   hooks:
   - id: blacken-docs
     additional_dependencies:
-    - black==25.9.0
+    - black==26.1.0
 - repo: https://github.com/pre-commit/pre-commit-hooks
   rev: v6.0.0
   hooks:
@@ -20,3 +20,7 @@ repos:
   rev: v1.0.0
   hooks:
     - id: sphinx-lint
+- repo: https://github.com/rhysd/actionlint
+  rev: v1.7.10
+  hooks:
+    - id: actionlint

.readthedocs.yml

@@ -8,7 +8,7 @@ build:
   tools:
     # For available versions, see:
     # https://docs.readthedocs.io/en/stable/config-file/v2.html#build-tools-python
-    python: "3.13"  # Keep in sync with .github/workflows/checks.yml
+    python: "3.14"  # Keep in sync with .github/workflows/checks.yml
 python:
   install:
     - requirements: docs/requirements.txt

pyproject.toml

@@ -66,6 +66,9 @@ exclude_also = [
     "if __name__ == '__main__':",
 ]
 
+[tool.mypy]
+strict = true
+
 [tool.pylint.MASTER]
 persistent = "no"
 extension-pkg-allow-list = ["lxml"]

tox.ini

@@ -15,7 +15,7 @@ commands =
 [testenv:pylint]
 deps =
     {[testenv]deps}
-    pylint==4.0.2
+    pylint==4.0.4
 commands =
     pylint {posargs: cssselect tests docs}
 
@@ -29,10 +29,10 @@ commands =
 [testenv:typing]
 deps =
     {[testenv]deps}
-    mypy==1.18.2
-    types-lxml==2025.8.25
+    mypy==1.19.1
+    types-lxml==2026.1.1
 commands =
-    mypy --strict {posargs: cssselect tests}
+    mypy {posargs: cssselect tests}
 
 [testenv:pre-commit]
 deps = pre-commit
@@ -43,7 +43,7 @@ skip_install = true
 basepython = python3
 deps =
     twine==6.2.0
-    build==1.3.0
+    build==1.4.0
 commands =
     python -m build --sdist
     twine check dist/*