diff --git a/libc/libc.arm64.map b/libc/libc.arm64.map
index 838a978..057e167 100644
--- a/libc/libc.arm64.map
+++ b/libc/libc.arm64.map
@@ -1157,6 +1157,7 @@
     freeifaddrs;
     fseeko64;
     fsetpos64;
+    funopen64;
     getgrgid_r;
     getgrnam_r;
     getifaddrs;