diff --git a/devel/py-propcache/files/patch-packaging_pep517__backend__backend.py b/devel/py-propcache/files/patch-packaging_pep517__backend__backend.py
new file mode 100644
index 000000000000..141344df0f8e
--- /dev/null
+++ b/devel/py-propcache/files/patch-packaging_pep517__backend__backend.py
@@ -0,0 +1,11 @@
+--- ./packaging/pep517_backend/_backend.py.orig	2025-10-08 18:09:05 UTC
++++ ./packaging/pep517_backend/_backend.py
+@@ -376,7 +376,7 @@ def get_requires_for_build_wheel(
+     if is_pure_python_build:
+         c_ext_build_deps = []
+     else:
+-        c_ext_build_deps = ['Cython ~= 3.1.0']
++        c_ext_build_deps = ['Cython']
+ 
+     return _setuptools_get_requires_for_build_wheel(
+         config_settings=config_settings,