diff --git a/libc/libc.x86.map b/libc/libc.x86.map
index eec2c19..d2e7399 100644
--- a/libc/libc.x86.map
+++ b/libc/libc.x86.map
@@ -1368,6 +1368,7 @@
     sethostent;
     setnetent;
     setprotoent;
+    sigaction64;
     sigaddset64;
     sigdelset64;
     sigemptyset64;