diff --git a/userguide/intro.rst b/userguide/intro.rst
index 488710c8c..78d64cc0f 100644
--- a/userguide/intro.rst
+++ b/userguide/intro.rst
@@ -426,6 +426,9 @@ U6.3
 U7
 ~~
 
+* NFS has been patched to address
+  `FreeBSD-SA-18:13.nfs <https://www.freebsd.org/security/advisories/FreeBSD-EN-18:14.tzdata.asc>`__.
+
 * Samba 4.7 has been patched to address recent
   `CVEs <https://www.samba.org/samba/latest_news.html#4.9.3>`__.