diff --git a/pyproject.toml b/pyproject.toml
index 2a42d06..99ce17b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,7 +50,7 @@ test = [
 dev = [
     'packaging',
     'setuptools>=60',
-    'Cython==3.2.4',
+    'Cython==3.2.5',
 ]
 docs = [
     'Sphinx>=4.1.2,<9.2.0',
@@ -63,7 +63,7 @@ requires = [
     "packaging",
     "setuptools>=60",
     "wheel",
-    "Cython==3.2.4",
+    "Cython==3.2.5",
 ]
 build-backend = "setuptools.build_meta"