diff --git a/libc/kernel/uapi/linux/prctl.h b/libc/kernel/uapi/linux/prctl.h
index 6ad1c04..ccab000 100644
--- a/libc/kernel/uapi/linux/prctl.h
+++ b/libc/kernel/uapi/linux/prctl.h
@@ -189,4 +189,7 @@
 #define PR_GET_MDWE 66
 #define PR_SET_VMA 0x53564d41
 #define PR_SET_VMA_ANON_NAME 0
+#define PR_GET_AUXV 0x41555856
+#define PR_SET_MEMORY_MERGE 67
+#define PR_GET_MEMORY_MERGE 68
 #endif