diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index bdc3a1c..01035ec 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -20,6 +20,7 @@ jobs:
           - "3.9"
           - "3.10"
           - "3.11"
+          - "3.12"
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/HISTORY.md b/HISTORY.md
index b2782cf..c3a6a0f 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -3,7 +3,8 @@
 ## 3.1.1 (unreleased)
 
 
-- Nothing changed yet.
+- Declare support for Python 3.12
+  [ale-rt]
 
 
 ## 3.1.0 (2023-06-30)
diff --git a/requirements.d/requirements-dev.txt b/requirements.d/requirements-dev.txt
index b3c7090..aab8738 100644
--- a/requirements.d/requirements-dev.txt
+++ b/requirements.d/requirements-dev.txt
@@ -1,60 +1,54 @@
-attrs==22.2.0
-beautifulsoup4==4.11.2
+beautifulsoup4==4.12.2
 bleach==6.0.0
 build==0.10.0
-certifi==2023.7.22
+certifi==2023.5.7
 cffi==1.15.1
-cfgv==3.3.1
-charset-normalizer==3.0.1
+cfgv==3.4.0
+charset-normalizer==3.1.0
 check-manifest==0.49
 colorama==0.4.6
-coverage==7.1.0
-cryptography==41.0.6
-distlib==0.3.6
+coverage==7.3.3
+cryptography==40.0.2
+distlib==0.3.8
 docutils==0.19
-fancycompleter==0.9.1
-filelock==3.9.0
-identify==2.5.17
+filelock==3.13.1
+identify==2.5.33
 idna==3.4
-importlib-metadata==6.0.0
+importlib-metadata==6.6.0
 iniconfig==2.0.0
 jaraco.classes==3.2.3
 jeepney==0.8.0
 keyring==23.13.1
-lxml==4.9.2
+lxml==4.9.3
 markdown-it-py==2.2.0
 mdurl==0.1.2
-more-itertools==9.0.0
-nodeenv==1.7.0
-packaging==23.0
-pdbpp==0.10.3
-pep517==0.13.0
+more-itertools==9.1.0
+nodeenv==1.8.0
+packaging==23.2
 pkginfo==1.9.6
-platformdirs==2.6.2
-pluggy==1.0.0
-pre-commit==3.0.4
+platformdirs==4.1.0
+pluggy==1.3.0
+pre-commit==3.5.0; python_version <= "3.8"
+pre-commit==3.6.0; python_version > "3.8"
 pycparser==2.21
-Pygments==2.15.0
+Pygments==2.15.1
 pyproject_hooks==1.0.0
-pyrepl==0.9.0
-pyroma==4.1
-pytest==7.2.1
-pytest-cov==4.0.0
-PyYAML==6.0
+pyroma==4.2
+pytest==7.4.3
+pytest-cov==4.1.0
+PyYAML==6.0.1
 readme-renderer==37.3
-requests==2.31.0
-requests-toolbelt==0.10.1
+requests==2.30.0
+requests-toolbelt==1.0.0
 rfc3986==2.0.0
-rich==13.3.1
+rich==13.3.5
 SecretStorage==3.3.3
-setuptools==67.2.0
 six==1.16.0
-soupsieve==2.3.2.post1
-trove-classifiers==2023.1.20
+soupsieve==2.5
+trove-classifiers==2023.5.2
 twine==4.0.2
-urllib3==1.26.18
-virtualenv==20.18.0
+urllib3==2.0.2
+virtualenv==20.25.0
 webencodings==0.5.1
-wmctrl==0.4
-zest.releaser==7.2.0
-zipp==3.12.1
+zest.releaser==8.0.0
+zipp==3.15.0
diff --git a/setup.py b/setup.py
index baddbcd..265bc5a 100644
--- a/setup.py
+++ b/setup.py
@@ -25,6 +25,7 @@ def read(*rnames):
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3 :: Only",
     ],
     author="Alessandro Pisa",
diff --git a/tox.ini b/tox.ini
index e8ba66d..a470179 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,6 +10,7 @@ envlist =
     py39,
     py310,
     py311,
+    py312,
     lint,
 
 [testenv]
@@ -24,7 +25,7 @@ deps = -r requirements.d/requirements-dev-37.txt
 deps = -r requirements.d/requirements-dev-37.txt
 
 [testenv:lint]
-basepython = python3.10
+basepython = python3.12
 skip_install = true
 deps = pre-commit
 commands = pre-commit run --all-files --show-diff-on-failure
@@ -39,3 +40,4 @@ python =
     3.9: py39
     3.10: py310
     3.11: py311
+    3.12: py312