diff --git a/libc/sysv/calls/sys_cachestat.S b/libc/sysv/calls/sys_cachestat.S
new file mode 100644
index 000000000..44475df40
--- /dev/null
+++ b/libc/sysv/calls/sys_cachestat.S
@@ -0,0 +1,2 @@
+#include "libc/sysv/macros.internal.h"
+.scall sys_cachestat,0xfffffffffffff1c3,451,4095,globl
diff --git a/libc/sysv/calls/sys_fchmodat2.S b/libc/sysv/calls/sys_fchmodat2.S
new file mode 100644
index 000000000..a45ef72d8
--- /dev/null
+++ b/libc/sysv/calls/sys_fchmodat2.S
@@ -0,0 +1,2 @@
+#include "libc/sysv/macros.internal.h"
+.scall sys_fchmodat2,0xfffffffffffff1c4,452,4095,globl
diff --git a/libc/sysv/syscalls.sh b/libc/sysv/syscalls.sh
index c8dedf7e7..8fcd359a8 100755
--- a/libc/sysv/syscalls.sh
+++ b/libc/sysv/syscalls.sh
@@ -383,6 +383,8 @@ scall	sys_memfd_secret	0xfffffffffffff1bf	0xfff	globl # no wrapper
 scall	sys_process_mrelease	0xfffffffffffff1c0	0xfff	globl # no wrapper
 scall	sys_futex_waitv		0xfffffffffffff1c1	0xfff	globl # no wrapper
 scall	sys_set_mempolicy_home_node 0xfffffffffffff1c2	0xfff	globl # no wrapper
+scall	sys_cachestat		0xfffffffffffff1c3	0x1c3	globl # Linux 6.5+
+scall	sys_fchmodat2		0xfffffffffffff1c4	0x1c4	globl # no wrapper Linux 6.6+
 
 #	The Fifth Bell System Interface, Community Edition
 #	» besiyata dishmaya