diff --git a/vendor/golang.org/x/sys/unix/zptrace_armnn_linux.go b/vendor/golang.org/x/sys/unix/zptrace_armnn_linux.go
index 8bcde84277..db5aced272 100644
--- a/vendor/golang.org/x/sys/unix/zptrace_armnn_linux.go
+++ b/vendor/golang.org/x/sys/unix/zptrace_armnn_linux.go
@@ -42,12 +42,12 @@ func PtraceSetRegsArm64(pid int, regs *PtraceRegsArm64) error {
 
 // PtraceGetRegSetArm64 fetches the registers used by arm64 binaries.
 func PtraceGetRegSetArm64(pid, addr int, regsout *PtraceRegsArm64) error {
-	iovec := Iovec{(*byte)(unsafe.Pointer(regsout)), uint64(unsafe.Sizeof(*regsout))}
+	iovec := Iovec{(*byte)(unsafe.Pointer(regsout)), uint32(unsafe.Sizeof(*regsout))}
 	return ptrace(PTRACE_GETREGSET, pid, uintptr(addr), uintptr(unsafe.Pointer(&iovec)))
 }
 
 // PtraceSetRegSetArm64 sets the registers used by arm64 binaries.
 func PtraceSetRegSetArm64(pid, addr int, regs *PtraceRegsArm64) error {
-	iovec := Iovec{(*byte)(unsafe.Pointer(regs)), uint64(unsafe.Sizeof(*regs))}
+	iovec := Iovec{(*byte)(unsafe.Pointer(regs)), uint32(unsafe.Sizeof(*regs))}
 	return ptrace(PTRACE_SETREGSET, pid, uintptr(addr), uintptr(unsafe.Pointer(&iovec)))
 }