diff --git a/libc/libc.x86.brillo.map b/libc/libc.x86.brillo.map
index c67f533..5459b0b 100644
--- a/libc/libc.x86.brillo.map
+++ b/libc/libc.x86.brillo.map
@@ -1260,6 +1260,11 @@
     hasmntopt;
     pthread_getname_np;
     setdomainname;
+    sighold;
+    sigignore;
+    sigpause;
+    sigrelse;
+    sigset;
 } LIBC_N;
 
 LIBC_PRIVATE {