diff --git a/.github/workflows/reusable-pytest.yml b/.github/workflows/reusable-pytest.yml
index a66d3312..7dea67cc 100644
--- a/.github/workflows/reusable-pytest.yml
+++ b/.github/workflows/reusable-pytest.yml
@@ -18,6 +18,7 @@ jobs:
           - "pypy-3.7"
           - "pypy-3.8"
           - "pypy-3.9"
+          - "3.12"
           - "3.11"
           - "3.10"
           - "3.9"
@@ -46,6 +47,7 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.py }}
+          allow-prereleases: true
 
       - name: Pick environment to run
         run: |
diff --git a/pyproject.toml b/pyproject.toml
index 668b8292..daef1b59 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ classifiers = [
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
 ]
diff --git a/tox.ini b/tox.ini
index 159d8b45..607f851f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@ envlist =
     type
     docs
     path
-    {py311, py310, py39, py38, py37, pypy37, pypy38, pypy39}{, -min}
+    {py312, py311, py310, py39, py38, py37, pypy37, pypy38, pypy39}{, -min}
 isolated_build = true
 skip_missing_interpreters = true
 minversion = 3.14
@@ -60,7 +60,7 @@ setenv =
 commands =
     mypy
 
-[testenv:{py311, py310, py39, py38, py37, pypy37, pypy38, pypy39}-min]
+[testenv:{py312, py311, py310, py39, py38, py37, pypy37, pypy38, pypy39}-min]
 description = check minimum versions required of all dependencies
 skip_install = true
 commands_pre =
@@ -103,4 +103,4 @@ commands =
     coverage xml -o {toxworkdir}/coverage.xml -i
     coverage html -d {toxworkdir}/htmlcov -i
     python -m diff_cover.diff_cover_tool --compare-branch {env:DIFF_AGAINST:origin/main} {toxworkdir}/coverage.xml
-depends = {py311, py310, py39, py38, py37, pypy37, pypy38, pypy39}{,-min}, path
+depends = {py312, py311, py310, py39, py38, py37, pypy37, pypy38, pypy39}{,-min}, path