diff --git a/pyproject.toml b/pyproject.toml
index 4336d11..4e14633 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,6 +2,6 @@
 requires = [
   "setuptools",
   "wheel",
-  "cython==3.0.12",
+  "cython==3.2.3",
   "numpy==2.0.2"
 ]