diff --git a/.flake8 b/.flake8
index 4315a12..8b0608f 100644
--- a/.flake8
+++ b/.flake8
@@ -2,7 +2,8 @@
 max-line-length = 99
 ignore =
     W503
-    E266  # too many leading '#' for block comment
+    # too many leading '#' for block comment
+    E266
 exclude =
     .git
     .tox
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 85b51ce..847d788 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -7,30 +7,30 @@ jobs:
     strategy:
       matrix:
         include:
-        - python-version: 3
+        - python-version: 3.12
           env:
             TOXENV: black
-        - python-version: 3
+        - python-version: 3.12
           env:
             TOXENV: flake8
-        - python-version: 3
+        - python-version: 3.12
           env:
             TOXENV: pylint
-        - python-version: 3
+        - python-version: 3.12
           env:
             TOXENV: security
-        - python-version: 3
+        - python-version: 3.12
           env:
             TOXENV: docs
-        - python-version: 3
+        - python-version: 3.12
           env:
             TOXENV: typing
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
 
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 977a42d..67d9c5a 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -7,12 +7,12 @@ jobs:
     if: startsWith(github.event.ref, 'refs/tags/')
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
-    - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+    - name: Set up Python 3.12
+      uses: actions/setup-python@v4
       with:
-        python-version: 3
+        python-version: 3.12
 
     - name: Check Tag
       id: check-release-tag
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 369fd68..0de2aa2 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -6,13 +6,13 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8, 3.9, "3.10", "3.11"]
+        python-version: [3.8, 3.9, "3.10", "3.11", "3.12"]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
 
diff --git a/setup.py b/setup.py
index 88dc31a..f7b51eb 100644
--- a/setup.py
+++ b/setup.py
@@ -41,5 +41,6 @@
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
     ],
 )
diff --git a/tox.ini b/tox.ini
index a400382..c618dfb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,7 @@ deps =
     lxml>=4.4
     pytest-cov>=2.8
     pytest>=5.4
+    setuptools
     sybil
 commands =
     pytest --cov=cssselect \
@@ -20,14 +21,14 @@ commands =
 
 [testenv:flake8]
 deps =
-    flake8==5.0.4
+    flake8==6.1.0
 commands =
     flake8 {posargs: cssselect setup.py tests docs/conf.py}
 
 [testenv:pylint]
 deps =
     {[testenv]deps}
-    pylint==2.15.3
+    pylint==3.0.0
 commands =
     pylint {posargs: cssselect setup.py tests docs}