diff --git a/libc/kernel/uapi/linux/btf.h b/libc/kernel/uapi/linux/btf.h
index 1bb64db..fc57d3c 100644
--- a/libc/kernel/uapi/linux/btf.h
+++ b/libc/kernel/uapi/linux/btf.h
@@ -64,6 +64,7 @@
   BTF_KIND_DATASEC = 15,
   BTF_KIND_FLOAT = 16,
   BTF_KIND_DECL_TAG = 17,
+  BTF_KIND_TYPE_TAG = 18,
   NR_BTF_KINDS,
   BTF_KIND_MAX = NR_BTF_KINDS - 1,
 };