diff -ru zstandard-0.25.0-orig/pyproject.toml zstandard-0.25.0/pyproject.toml
--- pyproject.toml	2025-11-01 19:08:02.362346000 -0400
+++ pyproject.toml	2025-11-02 10:13:06.989207180 -0500
@@ -25,7 +25,7 @@

 [project.optional-dependencies]
 cffi = [
-    "cffi~=1.17; platform_python_implementation != 'PyPy' and python_version < '3.14'",
+    "cffi>=2.0.0b; platform_python_implementation != 'PyPy' and python_version < '3.14'",
     "cffi>=2.0.0b; platform_python_implementation != 'PyPy' and python_version >= '3.14'",
 ]

@@ -35,7 +35,7 @@

 [build-system]
 requires = [
-    "cffi~=1.17; platform_python_implementation != 'PyPy' and python_version < '3.14'",
+    "cffi>=2.0.0b; platform_python_implementation != 'PyPy' and python_version < '3.14'",
     "cffi>=2.0.0b; platform_python_implementation != 'PyPy' and python_version >= '3.14'",
     "packaging",
     "setuptools>=77.0.0",
@@ -44,7 +44,7 @@

 [dependency-groups]
 dev = [
-    "cffi~=1.17; platform_python_implementation != 'PyPy' and python_version < '3.14'",
+    "cffi>=2.0.0b; platform_python_implementation != 'PyPy' and python_version < '3.14'",
     "cffi>=2.0.0b; platform_python_implementation != 'PyPy' and python_version >= '3.14'",
     "hypothesis==6.111.0",
     "mypy>=1.17.1",