diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3a0aa093..5060aa36 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,17 +24,21 @@ jobs:
         # Use macos-13 because pip binary packages for ARM aren't
         # available for many dependencies
         os: [macos-13, macos-14, ubuntu-latest]
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
         exclude:
           # Just run macos tests on one Python version
           - os: macos-13
             python-version: "3.10"
           - os: macos-13
             python-version: "3.11"
+          - os: macos-13
+            python-version: "3.12"
           - os: macos-14
             python-version: "3.9"
           - os: macos-14
             python-version: "3.10"
+          - os: macos-14
+            python-version: "3.12"
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/pyproject.toml b/pyproject.toml
index 08bc9742..42f976d8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,6 +36,7 @@ classifiers = [
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
   "Topic :: Scientific/Engineering"
 ]
 dynamic = ["version"]