diff --git a/stubs/cffi/cffi/api.pyi b/stubs/cffi/cffi/api.pyi
index c95a5b358..cfb26ef92 100644
--- a/stubs/cffi/cffi/api.pyi
+++ b/stubs/cffi/cffi/api.pyi
@@ -46,9 +46,9 @@ class FFI:
     @overload
     def from_buffer(self, cdecl: WriteableBuffer, require_writable: Literal[True]) -> CData: ...
     @overload
-    def from_buffer(self, cdecl: str, python_buffer: ReadableBuffer, require_writable: Literal[False] = ...) -> CData: ...
+    def from_buffer(self, cdecl: str | CType, python_buffer: ReadableBuffer, require_writable: Literal[False] = ...) -> CData: ...
     @overload
-    def from_buffer(self, cdecl: str, python_buffer: WriteableBuffer, require_writable: Literal[True]) -> CData: ...
+    def from_buffer(self, cdecl: str | CType, python_buffer: WriteableBuffer, require_writable: Literal[True]) -> CData: ...
     def memmove(self, dest: CData | WriteableBuffer, src: CData | ReadableBuffer, n: int) -> None: ...
     @overload
     def callback(