https://github.com/rasterio/rasterio/issues/3582

Index: pyproject.toml
--- pyproject.toml.orig
+++ pyproject.toml
@@ -1,7 +1,7 @@
 [build-system]
 requires = [
     "setuptools>=77.0.3",
-    "cython>=3.1,<=3.2",
+    "cython>=3.1",
     "numpy>=2,<3",
 ]
 build-backend = "setuptools.build_meta"
