diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 1c9752570..5be6808b0 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -31,7 +31,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
         # we do not want a large number of windows and macos builds, so
         # enumerate them explicitly
         include:
@@ -46,6 +46,7 @@ jobs:
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
       - name: install tox
         run: python -m pip install -U tox
       - name: run tests
diff --git a/changelog.d/20230815_161655_sirosen_test_on_py3_12.rst b/changelog.d/20230815_161655_sirosen_test_on_py3_12.rst
new file mode 100644
index 000000000..bfca92402
--- /dev/null
+++ b/changelog.d/20230815_161655_sirosen_test_on_py3_12.rst
@@ -0,0 +1,4 @@
+Python Support
+~~~~~~~~~~~~~~
+
+- Add support for Python 3.12. (:pr:`NUMBER`)
diff --git a/requirements/py3.11/docs.txt b/requirements/py3.11/docs.txt
index 7e6bb5688..60a934c69 100644
--- a/requirements/py3.11/docs.txt
+++ b/requirements/py3.11/docs.txt
@@ -16,7 +16,7 @@ charset-normalizer==3.2.0
     # via requests
 docutils==0.20.1
     # via sphinx
-furo==2023.8.17
+furo==2023.8.19
     # via -r docs.in
 idna==3.4
     # via requests
@@ -44,7 +44,7 @@ snowballstemmer==2.2.0
     # via sphinx
 soupsieve==2.4.1
     # via beautifulsoup4
-sphinx==7.2.2
+sphinx==7.2.3
     # via
     #   -r docs.in
     #   furo
@@ -75,7 +75,7 @@ sphinxcontrib-jsmath==1.0.1
     # via sphinx
 sphinxcontrib-qthelp==1.0.6
     # via sphinx
-sphinxcontrib-serializinghtml==1.1.8
+sphinxcontrib-serializinghtml==1.1.9
     # via sphinx
 types-pyyaml==6.0.12.11
     # via responses
diff --git a/requirements/py3.12/test.txt b/requirements/py3.12/test.txt
new file mode 100644
index 000000000..afb1810ab
--- /dev/null
+++ b/requirements/py3.12/test.txt
@@ -0,0 +1,40 @@
+#
+# This file is autogenerated by pip-compile with Python 3.12
+# by the following command:
+#
+#    tox p -m freezedeps
+#
+certifi==2023.7.22
+    # via requests
+charset-normalizer==3.2.0
+    # via requests
+coverage==7.3.0
+    # via -r test.in
+execnet==2.0.2
+    # via pytest-xdist
+idna==3.4
+    # via requests
+iniconfig==2.0.0
+    # via pytest
+packaging==23.1
+    # via pytest
+pluggy==1.2.0
+    # via pytest
+pytest==7.4.0
+    # via
+    #   -r test.in
+    #   pytest-xdist
+pytest-xdist==3.3.1
+    # via -r test.in
+pyyaml==6.0.1
+    # via responses
+requests==2.31.0
+    # via responses
+responses==0.23.3
+    # via -r test.in
+types-pyyaml==6.0.12.11
+    # via responses
+urllib3==2.0.4
+    # via
+    #   requests
+    #   responses
diff --git a/setup.cfg b/setup.cfg
index 475c61996..ca9d38179 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,6 +20,7 @@ classifiers =
   Programming Language :: Python :: 3.9
   Programming Language :: Python :: 3.10
   Programming Language :: Python :: 3.11
+  Programming Language :: Python :: 3.12
 
 [options]
 python_requires = >=3.7
diff --git a/tests/functional/services/timer/test_jobs.py b/tests/functional/services/timer/test_jobs.py
index bea69fc9e..0c1101499 100644
--- a/tests/functional/services/timer/test_jobs.py
+++ b/tests/functional/services/timer/test_jobs.py
@@ -1,5 +1,5 @@
+import datetime
 import json
-from datetime import datetime, timedelta
 
 import pytest
 
@@ -39,9 +39,9 @@ def test_get_job_errors(timer_client):
     assert err.message == "Request failed terribly"
 
 
-@pytest.mark.parametrize("start", [datetime.utcnow(), "2022-04-05T06:00:00"])
+@pytest.mark.parametrize("start", [datetime.datetime.now(), "2022-04-05T06:00:00"])
 @pytest.mark.parametrize(
-    "interval", [timedelta(days=1), timedelta(minutes=60), 600, None]
+    "interval", [datetime.timedelta(days=1), datetime.timedelta(minutes=60), 600, None]
 )
 def test_create_job(timer_client, start, interval):
     meta = load_response(timer_client.create_job).metadata
@@ -57,11 +57,11 @@ def test_create_job(timer_client, start, interval):
     assert response.http_status == 201
     assert response.data["job_id"] == meta["job_id"]
     req_body = json.loads(get_last_request().body)
-    if isinstance(start, datetime):
+    if isinstance(start, datetime.datetime):
         assert req_body["start"] == start.isoformat()
     else:
         assert req_body["start"] == start
-    if isinstance(interval, timedelta):
+    if isinstance(interval, datetime.timedelta):
         assert req_body["interval"] == interval.total_seconds()
     else:
         assert req_body["interval"] == interval
diff --git a/tox.ini b/tox.ini
index 692656f13..54481e77c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,14 +4,14 @@ envlist =
     mypy
     test-lazy-imports
     coverage_clean
-    py{311,310,39,38,37}
+    py{312,311,310,39,38,37}
     py37-mindeps
     coverage_report
     docs
 skip_missing_interpreters = true
 minversion = 4.0.0
 labels =
-    freezedeps = freezedeps-py{311,310,39,38,37}
+    freezedeps = freezedeps-py{312,311,310,39,38,37}
 
 [testenv]
 # build a wheel, not a tarball, and use a common env to do it (so that the wheel is shared)
@@ -95,7 +95,7 @@ commands_pre = rm -rf dist/
 changedir = tests/non-pytest/poetry-lock-test
 commands = poetry lock
 
-[testenv:freezedeps-py{311,310,39,38,37}]
+[testenv:freezedeps-py{312,311,310,39,38,37}]
 description = freeze development dependencies using pip-compile
 skip_install = true
 setenv =