--- a/contrib/python-zstandard/c-ext/compressor.c	Wed Jan 20 14:47:13 2021 +0100
+++ b/contrib/python-zstandard/c-ext/compressor.c	Mon Dec 14 10:44:29 2020 +0100
@@ -619,7 +619,7 @@
 		goto finally;
 	}
 
-	Py_SIZE(output) = outBuffer.pos;
+	Py_SET_SIZE(output, outBuffer.pos);
 
 finally:
 	PyBuffer_Release(&source);
@@ -1659,7 +1659,7 @@
 };
 
 void compressor_module_init(PyObject* mod) {
-	Py_TYPE(&ZstdCompressorType) = &PyType_Type;
+	Py_SET_TYPE(&ZstdCompressorType, &PyType_Type);
 	if (PyType_Ready(&ZstdCompressorType) < 0) {
 		return;
 	}