diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 9ebb9c0..504c2eb 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -94,16 +94,21 @@ jobs:
   test:
     needs: [ lint ]
     runs-on: ${{ matrix.os }}
+    # Pre-release Pythons may fail for reasons unrelated to this package
+    continue-on-error: ${{ matrix.experimental || false }}
     strategy:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest ]
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "pypy3.10", "pypy3.11" ]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15", "pypy3.11" ]
         include:
           - os: windows-latest
-            python-version: "3.13"
+            python-version: "3.15"
           - os: macos-latest
-            python-version: "3.13"
+            python-version: "3.15"
+          - os: ubuntu-latest
+            python-version: "3.16"
+            experimental: true
 
     steps:
       - uses: actions/checkout@v4
diff --git a/setup.py b/setup.py
index a7673de..a80a407 100644
--- a/setup.py
+++ b/setup.py
@@ -41,6 +41,7 @@
     'Programming Language :: Python :: 3.12',
     'Programming Language :: Python :: 3.13',
     'Programming Language :: Python :: 3.14',
+    'Programming Language :: Python :: 3.15',
     'Programming Language :: Python :: Implementation :: CPython',
     'Programming Language :: Python :: Implementation :: PyPy',
     'Topic :: Software Development :: Libraries',