diff --git a/.github/workflows/python-cibuildwheel.yml b/.github/workflows/python-cibuildwheel.yml
index 87355dc61..1489924d2 100644
--- a/.github/workflows/python-cibuildwheel.yml
+++ b/.github/workflows/python-cibuildwheel.yml
@@ -92,10 +92,10 @@ jobs:
           echo "MACOSX_DEPLOYMENT_TARGET=14.0" >> $GITHUB_ENV
 
       - name: Build python wheels for ${{ matrix.os }}
-        uses: pypa/cibuildwheel@v3.4.1
+        uses: pypa/cibuildwheel@v4.2.0
         env:
-          # Skip CPython 3.8
-          CIBW_SKIP: ${{ env.CIBW_SKIP }} cp38-*
+          # Skip CPython 3.15
+          CIBW_SKIP: ${{ env.CIBW_SKIP }} cp315*
 
           # only build native packages
           CIBW_ARCHS: native
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 6cf783b3d..ecbcf79cc 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -1,2 +1,2 @@
 [build-system]
-requires = ["autowrap>=0.23.0", "msgpack>=1.0.0", "pytest>=7.1.1", "cython>=3.0"]
+requires = ["autowrap>=0.23.0", "msgpack>=1.0.0", "pytest>=7.1.1", "cython==3.2.9"]
diff --git a/python/requirements.txt b/python/requirements.txt
index 4c480c80e..daa7a73b8 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,4 +1,4 @@
 autowrap>=0.23.0
 msgpack>=1.0.0
 pytest>=7.1.1
-cython>=3.0
+cython==3.2.9