diff --git a/libc/kernel/uapi/asm-x86/asm/hwcap2.h b/libc/kernel/uapi/asm-x86/asm/hwcap2.h
index 9015dee..a6dbfb9 100644
--- a/libc/kernel/uapi/asm-x86/asm/hwcap2.h
+++ b/libc/kernel/uapi/asm-x86/asm/hwcap2.h
@@ -19,4 +19,5 @@
 #ifndef _ASM_X86_HWCAP2_H
 #define _ASM_X86_HWCAP2_H
 #define HWCAP2_RING3MWAIT (1 << 0)
+#define HWCAP2_FSGSBASE BIT(1)
 #endif
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd_32.h b/libc/kernel/uapi/asm-x86/asm/unistd_32.h
index a3256c0..ff83a82 100644
--- a/libc/kernel/uapi/asm-x86/asm/unistd_32.h
+++ b/libc/kernel/uapi/asm-x86/asm/unistd_32.h
@@ -443,6 +443,7 @@
 #define __NR_fspick 433
 #define __NR_pidfd_open 434
 #define __NR_clone3 435
+#define __NR_close_range 436
 #define __NR_openat2 437
 #define __NR_pidfd_getfd 438
 #define __NR_faccessat2 439
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd_64.h b/libc/kernel/uapi/asm-x86/asm/unistd_64.h
index 9c12a3d..40986b8 100644
--- a/libc/kernel/uapi/asm-x86/asm/unistd_64.h
+++ b/libc/kernel/uapi/asm-x86/asm/unistd_64.h
@@ -365,6 +365,7 @@
 #define __NR_fspick 433
 #define __NR_pidfd_open 434
 #define __NR_clone3 435
+#define __NR_close_range 436
 #define __NR_openat2 437
 #define __NR_pidfd_getfd 438
 #define __NR_faccessat2 439
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd_x32.h b/libc/kernel/uapi/asm-x86/asm/unistd_x32.h
index 5f92cfd..283828b 100644
--- a/libc/kernel/uapi/asm-x86/asm/unistd_x32.h
+++ b/libc/kernel/uapi/asm-x86/asm/unistd_x32.h
@@ -318,6 +318,7 @@
 #define __NR_fspick (__X32_SYSCALL_BIT + 433)
 #define __NR_pidfd_open (__X32_SYSCALL_BIT + 434)
 #define __NR_clone3 (__X32_SYSCALL_BIT + 435)
+#define __NR_close_range (__X32_SYSCALL_BIT + 436)
 #define __NR_openat2 (__X32_SYSCALL_BIT + 437)
 #define __NR_pidfd_getfd (__X32_SYSCALL_BIT + 438)
 #define __NR_faccessat2 (__X32_SYSCALL_BIT + 439)