diff --git a/unix/zerrors_linux_amd64.go b/unix/zerrors_linux_amd64.go
index f92cff6..82fc93c 100644
--- a/unix/zerrors_linux_amd64.go
+++ b/unix/zerrors_linux_amd64.go
@@ -71,6 +71,8 @@
 	EXTPROC                          = 0x10000
 	FF1                              = 0x8000
 	FFDLY                            = 0x8000
+	FICLONE                          = 0x40049409
+	FICLONERANGE                     = 0x4020940d
 	FLUSHO                           = 0x1000
 	FP_XSTATE_MAGIC2                 = 0x46505845
 	FS_IOC_ENABLE_VERITY             = 0x40806685