diff --git a/src/libgetdns.symbols b/src/libgetdns.symbols
index 6e3cb128..0b98b211 100644
--- a/src/libgetdns.symbols
+++ b/src/libgetdns.symbols
@@ -145,6 +145,7 @@ getdns_str2rr_dict
 getdns_strerror
 getdns_validate_dnssec
 getdns_validate_dnssec2
+getdns_validate_dnssec3
 getdns_wire2msg_dict
 getdns_wire2msg_dict_buf
 getdns_wire2msg_dict_scan