diff --git a/libc/libc.x86.brillo.map b/libc/libc.x86.brillo.map
index f14861d..b1ba988 100644
--- a/libc/libc.x86.brillo.map
+++ b/libc/libc.x86.brillo.map
@@ -1273,6 +1273,10 @@
     sigrelse;
     sigset;
     sync_file_range;
+    towctrans;
+    towctrans_l;
+    wctrans;
+    wctrans_l;
 } LIBC_N;
 
 LIBC_PRIVATE {