diff --git a/libc/libc.arm.brillo.map b/libc/libc.arm.brillo.map
index 95f7cba..4de7b2b 100644
--- a/libc/libc.arm.brillo.map
+++ b/libc/libc.arm.brillo.map
@@ -1235,6 +1235,8 @@
     getifaddrs;
     if_freenameindex;
     if_nameindex;
+    lockf;
+    lockf64;
     preadv;
     preadv64;
     prlimit; # arm mips x86