diff --git a/libc/include/sys/linux-syscalls.h b/libc/include/sys/linux-syscalls.h
index 0568293..89ab167 100644
--- a/libc/include/sys/linux-syscalls.h
+++ b/libc/include/sys/linux-syscalls.h
@@ -119,6 +119,8 @@
 #define __NR_madvise                      (__NR_SYSCALL_BASE + 220)
 #define __NR_mlock                        (__NR_SYSCALL_BASE + 150)
 #define __NR_munlock                      (__NR_SYSCALL_BASE + 151)
+#define __NR_mlockall                     (__NR_SYSCALL_BASE + 152)
+#define __NR_munlockall                   (__NR_SYSCALL_BASE + 153)
 #define __NR_mincore                      (__NR_SYSCALL_BASE + 219)
 #define __NR_pipe                         (__NR_SYSCALL_BASE + 42)
 #define __NR_pipe2                        (__NR_SYSCALL_BASE + 359)
@@ -222,6 +224,8 @@
 #define __NR_fdatasync                    (__NR_SYSCALL_BASE + 148)
 #define __NR_mlock                        (__NR_SYSCALL_BASE + 150)
 #define __NR_munlock                      (__NR_SYSCALL_BASE + 151)
+#define __NR_mlockall                     (__NR_SYSCALL_BASE + 152)
+#define __NR_munlockall                   (__NR_SYSCALL_BASE + 153)
 #define __NR_sched_setparam               (__NR_SYSCALL_BASE + 154)
 #define __NR_sched_getparam               (__NR_SYSCALL_BASE + 155)
 #define __NR_sched_setscheduler           (__NR_SYSCALL_BASE + 156)
@@ -350,6 +354,8 @@
 #define __NR_fdatasync                    (__NR_SYSCALL_BASE + 152)
 #define __NR_mlock                        (__NR_SYSCALL_BASE + 154)
 #define __NR_munlock                      (__NR_SYSCALL_BASE + 155)
+#define __NR_mlockall                     (__NR_SYSCALL_BASE + 156)
+#define __NR_munlockall                   (__NR_SYSCALL_BASE + 157)
 #define __NR_sched_setparam               (__NR_SYSCALL_BASE + 158)
 #define __NR_sched_getparam               (__NR_SYSCALL_BASE + 159)
 #define __NR_sched_setscheduler           (__NR_SYSCALL_BASE + 160)