diff -r 711ba0f1057e -r e92ca942ddca contrib/python-zstandard/c-ext/python-zstandard.h
--- a/contrib/python-zstandard/c-ext/python-zstandard.h	Wed Jan 20 14:47:13 2021 +0100
+++ b/contrib/python-zstandard/c-ext/python-zstandard.h	Mon Dec 14 10:44:29 2020 +0100
@@ -9,6 +9,7 @@
 #define PY_SSIZE_T_CLEAN
 #include <Python.h>
 #include "structmember.h"
+#include <pythoncapi_compat.h>
 
 #define ZSTD_STATIC_LINKING_ONLY
 #define ZDICT_STATIC_LINKING_ONLY