diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index fc730cd..ecbb4f7 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -103,7 +103,7 @@ jobs:
   pypi_wheel_build:
     strategy:
       matrix:
-        os: ["ubuntu-latest", "macos-12"]
+        os: ["ubuntu-latest", "macos-latest"]
         python-version: ["38", "39", "310", "311", "312", "313"]
     runs-on: ${{ matrix.os }}
     needs: [build_and_test]
diff --git a/pyproject.toml b/pyproject.toml
index a7620ee..9cbeb6b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,6 +28,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Scientific/Engineering :: Astronomy",
 ]
 keywords = ["lsst"]