--- src/keyring_macos.c.orig	2022-10-27 17:27:45.000000000 +0800
+++ src/keyring_macos.c	2023-04-15 21:49:29.000000000 +0800
@@ -1,5 +1,7 @@
 
 #ifdef __APPLE__
+#include <AvailabilityMacros.h>
+#if __MAC_OS_X_VERSION_MIN_REQUIRED > 1060
 
 #include <CoreFoundation/CoreFoundation.h>
 #include <Security/Security.h>
@@ -599,4 +601,5 @@
   return R_NilValue;
 }
 
+#endif
 #endif // __APPLE__