diff --git a/libc/kernel/uapi/linux/auxvec.h b/libc/kernel/uapi/linux/auxvec.h
index ce02287..6dbdc75 100644
--- a/libc/kernel/uapi/linux/auxvec.h
+++ b/libc/kernel/uapi/linux/auxvec.h
@@ -31,6 +31,8 @@
 #define AT_HWCAP2 26
 #define AT_RSEQ_FEATURE_SIZE 27
 #define AT_RSEQ_ALIGN 28
+#define AT_HWCAP3 29
+#define AT_HWCAP4 30
 #define AT_EXECFN 31
 #ifndef AT_MINSIGSTKSZ
 #define AT_MINSIGSTKSZ 51