diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 14a7c8b..04c4ac6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -59,7 +59,14 @@ 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
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 8a1d301..5db1537 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with Python 3.11
 # by the following command:
 #
-#    pip-compile --resolver=backtracking docs/requirements.in
+#    pip-compile --config=pyproject.toml docs/requirements.in
 #
 alabaster==0.7.13
     # via sphinx
@@ -10,19 +10,19 @@ babel==2.12.1
     # via sphinx
 beautifulsoup4==4.12.2
     # via furo
-certifi==2023.5.7
+certifi==2023.7.22
     # via requests
-charset-normalizer==3.1.0
+charset-normalizer==3.2.0
     # via requests
-contourpy==1.0.7
+contourpy==1.1.0
     # via matplotlib
 cycler==0.11.0
     # via matplotlib
 docutils==0.20.1
     # via sphinx
-fonttools==4.39.4
+fonttools==4.41.1
     # via matplotlib
-furo==2023.5.20
+furo==2023.7.26
     # via -r docs/requirements.in
 idna==3.4
     # via requests
@@ -32,13 +32,13 @@ jinja2==3.1.2
     # via sphinx
 kiwisolver==1.4.4
     # via matplotlib
-lxml==4.9.2
+lxml==4.9.3
     # via sphinx-json-schema-spec
-markupsafe==2.1.2
+markupsafe==2.1.3
     # via jinja2
-matplotlib==3.7.1
+matplotlib==3.7.2
     # via sphinxext-opengraph
-numpy==1.24.3
+numpy==1.25.2
     # via
     #   contourpy
     #   matplotlib
@@ -46,7 +46,7 @@ packaging==23.1
     # via
     #   matplotlib
     #   sphinx
-pillow==9.5.0
+pillow==10.0.0
     # via matplotlib
 pyenchant==3.2.2
     # via sphinxcontrib-spelling
@@ -66,7 +66,7 @@ snowballstemmer==2.2.0
     # via sphinx
 soupsieve==2.4.1
     # via beautifulsoup4
-sphinx==7.0.1
+sphinx==7.1.2
     # via
     #   -r docs/requirements.in
     #   furo
@@ -74,7 +74,7 @@ sphinx==7.0.1
     #   sphinx-json-schema-spec
     #   sphinxcontrib-spelling
     #   sphinxext-opengraph
-sphinx-basic-ng==1.0.0b1
+sphinx-basic-ng==1.0.0b2
     # via furo
 file:.#egg=sphinx_json_schema_spec
     # via -r docs/requirements.in
@@ -94,5 +94,5 @@ sphinxcontrib-spelling==8.0.0
     # via -r docs/requirements.in
 sphinxext-opengraph==0.8.2
     # via -r docs/requirements.in
-urllib3==2.0.2
+urllib3==2.0.4
     # via requests
diff --git a/noxfile.py b/noxfile.py
index 212d48e..b8faca4 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)
     session.run("pytest", *session.posargs, PACKAGE)
@@ -74,6 +74,7 @@ def docs(session, builder):
         argv = ["-n", "-T", "-W"]
         if builder != "spelling":
             argv += ["-q"]
+        posargs = session.posargs or [tmpdir / builder]
         session.run(
             "python",
             "-m",
@@ -81,8 +82,8 @@ def docs(session, builder):
             "-b",
             builder,
             DOCS,
-            tmpdir / builder,
             *argv,
+            *posargs,
         )
 
 
@@ -94,3 +95,16 @@ def docs_style(session):
         "pygments-github-lexers",
     )
     session.run("python", "-m", "doc8", "--config", PYPROJECT, DOCS)
+
+
+@session(default=False)
+def requirements(session):
+    session.install("pip-tools")
+    for each in [DOCS / "requirements.in"]:
+        session.run(
+            "pip-compile",
+            "--resolver",
+            "backtracking",
+            "-U",
+            each.relative_to(ROOT),
+        )
diff --git a/pyproject.toml b/pyproject.toml
index 18f89a1..08dffbe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,11 +22,11 @@ classifiers = [
   "License :: OSI Approved :: MIT License",
   "Operating System :: OS Independent",
   "Programming Language :: Python",
-  "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3.8",
   "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",
   "Framework :: Sphinx :: Extension",