diff --git a/pyproject.toml b/pyproject.toml
index 7ee648cd..e2b18388 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,7 +62,7 @@ docs = [
 [build-system]
 requires = [
     "setuptools>=77.0.3",
-    "Cython(>=3.1.0,<4.0.0)"
+    "Cython(>=3.2.1,<4.0.0)"
 ]
 build-backend = "setuptools.build_meta"
 
diff --git a/setup.py b/setup.py
index b6f66b16..c2332822 100644
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,7 @@
 from setuptools.command import build_ext as setuptools_build_ext
 
 
-CYTHON_DEPENDENCY = 'Cython(>=3.1.0,<4.0.0)'
+CYTHON_DEPENDENCY = 'Cython(>=3.2.1,<4.0.0)'
 
 CFLAGS = ['-O2']
 LDFLAGS = []