diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 07664ae..276d448 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -52,9 +52,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Install dependencies
-        run: >
-          sudo apt-get update &&
-          sudo apt-get install -y libenchant-2-dev
+        run: sudo apt-get update && sudo apt-get install -y libenchant-2-dev
         if: runner.os == 'Linux' && startsWith(matrix.noxenv, 'docs')
       - name: Install dependencies
         run: brew install enchant
@@ -62,11 +60,18 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.x"
+          python-version: |
+            3.8
+            3.9
+            3.10
+            3.11
+            3.12
+            pypy3.10
+          allow-prereleases: true
       - name: Set up nox
         uses: wntrblm/nox@2023.04.22
       - name: Run nox
-        run: nox -s "${{ matrix.noxenv }}"
+        run: nox -s "${{ matrix.noxenv }}" -- ${{ matrix.posargs }}
 
   packaging:
     needs: ci
diff --git a/noxfile.py b/noxfile.py
index 8fcddd0..ac4ed63 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -21,7 +21,7 @@ def _session(fn):
     return _session
 
 
-@session(python=["3.8", "3.9", "3.10", "3.11", "pypy3"])
+@session(python=["3.8", "3.9", "3.10", "3.11", "3.12", "pypy3"])
 def tests(session):
     session.install("pytest", ROOT)
     env = dict(os.environ, PYTHONWARNDEFAULTENCODING="1")
diff --git a/pyproject.toml b/pyproject.toml
index 962ddb2..835c2af 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,12 +31,12 @@ 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",
   "Topic :: File Formats :: JSON :: JSON Schema",
 ]
 dynamic = ["version"]
-
 dependencies = [
   "referencing>=0.28.0",
   "importlib_resources>=1.4.0;python_version<'3.9'",