diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index 8ede380..12b8114 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1565,6 +1565,14 @@
     process_madvise;
 } LIBC_R;
 
+LIBC_T { # introduced=Tiramisu
+  global:
+    preadv2;
+    preadv64v2;
+    pwritev2;
+    pwritev64v2;
+} LIBC_S;
+
 LIBC_PRIVATE {
   global:
     __accept4; # arm x86