diff --git a/libc/libc.x86_64.map b/libc/libc.x86_64.map
index 3af0d42..a39a233 100644
--- a/libc/libc.x86_64.map
+++ b/libc/libc.x86_64.map
@@ -1306,6 +1306,7 @@
     sethostent;
     setnetent;
     setprotoent;
+    sigaction64;
     sigaddset64;
     sigdelset64;
     sigemptyset64;