diff --git a/unix/zsysnum_darwin_amd64.go b/unix/zsysnum_darwin_amd64.go
index 09de240..e35de41 100644
--- a/unix/zsysnum_darwin_amd64.go
+++ b/unix/zsysnum_darwin_amd64.go
@@ -1,5 +1,5 @@
-// mksysnum_darwin.pl /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/sys/syscall.h
-// MACHINE GENERATED BY THE ABOVE COMMAND; DO NOT EDIT
+// mksysnum_darwin.pl /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/sys/syscall.h
+// Code generated by the command above; see README.md. DO NOT EDIT.
 
 // +build amd64,darwin
 
@@ -121,13 +121,15 @@
 	SYS_CSOPS                          = 169
 	SYS_CSOPS_AUDITTOKEN               = 170
 	SYS_WAITID                         = 173
+	SYS_KDEBUG_TYPEFILTER              = 177
+	SYS_KDEBUG_TRACE_STRING            = 178
 	SYS_KDEBUG_TRACE64                 = 179
 	SYS_KDEBUG_TRACE                   = 180
 	SYS_SETGID                         = 181
 	SYS_SETEGID                        = 182
 	SYS_SETEUID                        = 183
 	SYS_SIGRETURN                      = 184
-	SYS_CHUD                           = 185
+	SYS_THREAD_SELFCOUNTS              = 186
 	SYS_FDATASYNC                      = 187
 	SYS_STAT                           = 188
 	SYS_FSTAT                          = 189
@@ -278,7 +280,6 @@
 	SYS_KQUEUE                         = 362
 	SYS_KEVENT                         = 363
 	SYS_LCHOWN                         = 364
-	SYS_STACK_SNAPSHOT                 = 365
 	SYS_BSDTHREAD_REGISTER             = 366
 	SYS_WORKQ_OPEN                     = 367
 	SYS_WORKQ_KERNRETURN               = 368
@@ -287,6 +288,8 @@
 	SYS___OLD_SEMWAIT_SIGNAL_NOCANCEL  = 371
 	SYS_THREAD_SELFID                  = 372
 	SYS_LEDGER                         = 373
+	SYS_KEVENT_QOS                     = 374
+	SYS_KEVENT_ID                      = 375
 	SYS___MAC_EXECVE                   = 380
 	SYS___MAC_SYSCALL                  = 381
 	SYS___MAC_GET_FILE                 = 382
@@ -298,11 +301,8 @@
 	SYS___MAC_GET_FD                   = 388
 	SYS___MAC_SET_FD                   = 389
 	SYS___MAC_GET_PID                  = 390
-	SYS___MAC_GET_LCID                 = 391
-	SYS___MAC_GET_LCTX                 = 392
-	SYS___MAC_SET_LCTX                 = 393
-	SYS_SETLCID                        = 394
-	SYS_GETLCID                        = 395
+	SYS_PSELECT                        = 394
+	SYS_PSELECT_NOCANCEL               = 395
 	SYS_READ_NOCANCEL                  = 396
 	SYS_WRITE_NOCANCEL                 = 397
 	SYS_OPEN_NOCANCEL                  = 398
@@ -351,6 +351,7 @@
 	SYS_GUARDED_CLOSE_NP               = 442
 	SYS_GUARDED_KQUEUE_NP              = 443
 	SYS_CHANGE_FDGUARD_NP              = 444
+	SYS_USRCTL                         = 445
 	SYS_PROC_RLIMIT_CONTROL            = 446
 	SYS_CONNECTX                       = 447
 	SYS_DISCONNECTX                    = 448
@@ -367,6 +368,7 @@
 	SYS_COALITION_INFO                 = 459
 	SYS_NECP_MATCH_POLICY              = 460
 	SYS_GETATTRLISTBULK                = 461
+	SYS_CLONEFILEAT                    = 462
 	SYS_OPENAT                         = 463
 	SYS_OPENAT_NOCANCEL                = 464
 	SYS_RENAMEAT                       = 465
@@ -392,7 +394,43 @@
 	SYS_GUARDED_WRITE_NP               = 485
 	SYS_GUARDED_PWRITE_NP              = 486
 	SYS_GUARDED_WRITEV_NP              = 487
-	SYS_RENAME_EXT                     = 488
+	SYS_RENAMEATX_NP                   = 488
 	SYS_MREMAP_ENCRYPTED               = 489
-	SYS_MAXSYSCALL                     = 490
+	SYS_NETAGENT_TRIGGER               = 490
+	SYS_STACK_SNAPSHOT_WITH_CONFIG     = 491
+	SYS_MICROSTACKSHOT                 = 492
+	SYS_GRAB_PGO_DATA                  = 493
+	SYS_PERSONA                        = 494
+	SYS_WORK_INTERVAL_CTL              = 499
+	SYS_GETENTROPY                     = 500
+	SYS_NECP_OPEN                      = 501
+	SYS_NECP_CLIENT_ACTION             = 502
+	SYS___NEXUS_OPEN                   = 503
+	SYS___NEXUS_REGISTER               = 504
+	SYS___NEXUS_DEREGISTER             = 505
+	SYS___NEXUS_CREATE                 = 506
+	SYS___NEXUS_DESTROY                = 507
+	SYS___NEXUS_GET_OPT                = 508
+	SYS___NEXUS_SET_OPT                = 509
+	SYS___CHANNEL_OPEN                 = 510
+	SYS___CHANNEL_GET_INFO             = 511
+	SYS___CHANNEL_SYNC                 = 512
+	SYS___CHANNEL_GET_OPT              = 513
+	SYS___CHANNEL_SET_OPT              = 514
+	SYS_ULOCK_WAIT                     = 515
+	SYS_ULOCK_WAKE                     = 516
+	SYS_FCLONEFILEAT                   = 517
+	SYS_FS_SNAPSHOT                    = 518
+	SYS_TERMINATE_WITH_PAYLOAD         = 520
+	SYS_ABORT_WITH_PAYLOAD             = 521
+	SYS_NECP_SESSION_OPEN              = 522
+	SYS_NECP_SESSION_ACTION            = 523
+	SYS_SETATTRLISTAT                  = 524
+	SYS_NET_QOS_GUIDELINE              = 525
+	SYS_FMOUNT                         = 526
+	SYS_NTP_ADJTIME                    = 527
+	SYS_NTP_GETTIME                    = 528
+	SYS_OS_FAULT_WITH_PAYLOAD          = 529
+	SYS_MAXSYSCALL                     = 530
+	SYS_INVALID                        = 63
 )