diff --git a/unix/mkerrors.sh b/unix/mkerrors.sh
index cab4560..e7c51aa 100755
--- a/unix/mkerrors.sh
+++ b/unix/mkerrors.sh
@@ -58,6 +58,7 @@
 #define _DARWIN_USE_64_BIT_INODE
 #include <stdint.h>
 #include <sys/attr.h>
+#include <sys/clonefile.h>
 #include <sys/types.h>
 #include <sys/event.h>
 #include <sys/ptrace.h>
diff --git a/unix/zerrors_darwin_386.go b/unix/zerrors_darwin_386.go
index 6217cdb..6f33359 100644
--- a/unix/zerrors_darwin_386.go
+++ b/unix/zerrors_darwin_386.go
@@ -232,6 +232,8 @@
 	CLOCK_THREAD_CPUTIME_ID           = 0x10
 	CLOCK_UPTIME_RAW                  = 0x8
 	CLOCK_UPTIME_RAW_APPROX           = 0x9
+	CLONE_NOFOLLOW                    = 0x1
+	CLONE_NOOWNERCOPY                 = 0x2
 	CR0                               = 0x0
 	CR1                               = 0x1000
 	CR2                               = 0x2000
diff --git a/unix/zerrors_darwin_amd64.go b/unix/zerrors_darwin_amd64.go
index e3ff2ee..db767eb 100644
--- a/unix/zerrors_darwin_amd64.go
+++ b/unix/zerrors_darwin_amd64.go
@@ -232,6 +232,8 @@
 	CLOCK_THREAD_CPUTIME_ID           = 0x10
 	CLOCK_UPTIME_RAW                  = 0x8
 	CLOCK_UPTIME_RAW_APPROX           = 0x9
+	CLONE_NOFOLLOW                    = 0x1
+	CLONE_NOOWNERCOPY                 = 0x2
 	CR0                               = 0x0
 	CR1                               = 0x1000
 	CR2                               = 0x2000
diff --git a/unix/zerrors_darwin_arm.go b/unix/zerrors_darwin_arm.go
index 3e41757..ddc5d00 100644
--- a/unix/zerrors_darwin_arm.go
+++ b/unix/zerrors_darwin_arm.go
@@ -232,6 +232,8 @@
 	CLOCK_THREAD_CPUTIME_ID           = 0x10
 	CLOCK_UPTIME_RAW                  = 0x8
 	CLOCK_UPTIME_RAW_APPROX           = 0x9
+	CLONE_NOFOLLOW                    = 0x1
+	CLONE_NOOWNERCOPY                 = 0x2
 	CR0                               = 0x0
 	CR1                               = 0x1000
 	CR2                               = 0x2000
diff --git a/unix/zerrors_darwin_arm64.go b/unix/zerrors_darwin_arm64.go
index cbd8ed1..0614d26 100644
--- a/unix/zerrors_darwin_arm64.go
+++ b/unix/zerrors_darwin_arm64.go
@@ -232,6 +232,8 @@
 	CLOCK_THREAD_CPUTIME_ID           = 0x10
 	CLOCK_UPTIME_RAW                  = 0x8
 	CLOCK_UPTIME_RAW_APPROX           = 0x9
+	CLONE_NOFOLLOW                    = 0x1
+	CLONE_NOOWNERCOPY                 = 0x2
 	CR0                               = 0x0
 	CR1                               = 0x1000
 	CR2                               = 0x2000