diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8357b9b2..4f9232d4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,12 +34,14 @@ jobs:
         - "3.12"
         - "3.13"
         - "3.14"
+        - "3.15"
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
     - name: Install test dependencies
       run: |
         python -m pip install --upgrade pip
diff --git a/setup.py b/setup.py
index 66bf91de..a963d0c1 100755
--- a/setup.py
+++ b/setup.py
@@ -56,6 +56,7 @@
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
         "Programming Language :: Python :: 3.14",
+        "Programming Language :: Python :: 3.15",
     ],
     project_urls={
         "Source": "https://github.com/certifi/python-certifi",