diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d3a6a1cf..c82e0a97 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -49,7 +49,7 @@ jobs:
           - macos-15-intel
         python:
           - '3.9'
-          - '3.14'
+          - '3.15'
         meson:
           -
         dependencies:
@@ -115,6 +115,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python }}
+          allow-prereleases: true
 
       - name: Install Ninja
         run: sudo apt-get install ninja-build
diff --git a/tests/test_sdist.py b/tests/test_sdist.py
index 70a3e357..4fc0bda1 100644
--- a/tests/test_sdist.py
+++ b/tests/test_sdist.py
@@ -222,6 +222,11 @@ def test_reproducible(package_pure, tmp_path):
 # containing symbolic links to absolute paths on Python 3.14.
 # See https://github.com/mesonbuild/meson/issues/15142
 @pytest.mark.skipif(sys.version_info >= (3, 14) and MESON_VERSION < (1, 9, 2), reason='incompatible Python version')
+# Python 3.15 tarfile module translates POSIX paths to Windows paths
+# when extracting tar archives on Windows, but does not implement the
+# inverse when creating archives. This results in invalid tar archives
+# and breaks this test. See https://github.com/python/cpython/pull/151671
+@pytest.mark.xfail(sys.version_info >= (3, 15) and sys.platform == 'win32', reason='Python 3.15 tarfile module bug')
 @pytest.mark.filterwarnings('ignore:symbolic link')
 def test_symlinks(tmp_path, sdist_symlinks):
     with tarfile.open(sdist_symlinks, 'r:gz') as sdist: