diff --git a/unix/ztypes_darwin_amd64.go b/unix/ztypes_darwin_amd64.go
index e2a64f09..06cb4464 100644
--- a/unix/ztypes_darwin_amd64.go
+++ b/unix/ztypes_darwin_amd64.go
@@ -610,6 +610,7 @@ const (
 	AT_REMOVEDIR        = 0x80
 	AT_SYMLINK_FOLLOW   = 0x40
 	AT_SYMLINK_NOFOLLOW = 0x20
+	AT_EACCESS          = 0x10
 )
 
 type PollFd struct {
diff --git a/unix/ztypes_darwin_arm64.go b/unix/ztypes_darwin_arm64.go
index 34aa7752..3b9dd1d3 100644
--- a/unix/ztypes_darwin_arm64.go
+++ b/unix/ztypes_darwin_arm64.go
@@ -610,6 +610,7 @@ const (
 	AT_REMOVEDIR        = 0x80
 	AT_SYMLINK_FOLLOW   = 0x40
 	AT_SYMLINK_NOFOLLOW = 0x20
+	AT_EACCESS          = 0x10
 )
 
 type PollFd struct {