diff --git a/mingw-w64-headers/crt/wchar.h b/mingw-w64-headers/crt/wchar.h
index f660572..9d22d31 100644
--- a/mingw-w64-headers/crt/wchar.h
+++ b/mingw-w64-headers/crt/wchar.h
@@ -281,8 +281,8 @@
   _CRTIMP wint_t __cdecl _ungetwch(wint_t _WCh);
   _CRTIMP int __cdecl _cputws(const wchar_t *_String);
   _CRTIMP int __cdecl _cwprintf(const wchar_t * __restrict__ _Format,...);
-  _CRTIMP int __cdecl _cwscanf(const wchar_t * __restrict__ _Format,...);
-  _CRTIMP int __cdecl _cwscanf_l(const wchar_t * __restrict__ _Format,_locale_t _Locale,...);
+  _CRTIMP int __cdecl _cwscanf(const wchar_t * __restrict__ _Format,...) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
+  _CRTIMP int __cdecl _cwscanf_l(const wchar_t * __restrict__ _Format,_locale_t _Locale,...) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
   _CRTIMP int __cdecl _vcwprintf(const wchar_t * __restrict__ _Format,va_list _ArgList);
   _CRTIMP int __cdecl _cwprintf_p(const wchar_t * __restrict__ _Format,...);
   _CRTIMP int __cdecl _vcwprintf_p(const wchar_t * __restrict__ _Format,va_list _ArgList);