diff --git a/website/static/security/advisory-template.txt b/website/static/security/advisory-template.txt
--- a/website/static/security/advisory-template.txt
+++ b/website/static/security/advisory-template.txt
@@ -59,8 +59,9 @@
 
 1) To update your vulnerable system via a binary patch:
 
-Systems running a RELEASE version of FreeBSD on the i386 or amd64
-platforms can be updated via the freebsd-update(8) utility:
+Systems running a RELEASE version of FreeBSD on the amd64, i386, or
+(on FreeBSD 13 and later) arm64 platforms can be updated via the
+freebsd-update(8) utility:
 
 # freebsd-update fetch
 # freebsd-update install
diff --git a/website/static/security/errata-template.txt b/website/static/security/errata-template.txt
--- a/website/static/security/errata-template.txt
+++ b/website/static/security/errata-template.txt
@@ -59,8 +59,9 @@
 
 1) To update your system via a binary patch:
 
-Systems running a RELEASE version of FreeBSD on the i386 or amd64
-platforms can be updated via the freebsd-update(8) utility:
+Systems running a RELEASE version of FreeBSD on the amd64, i386, or
+(on FreeBSD 13 and later) arm64 platforms can be updated via the
+freebsd-update(8) utility:
 
 # freebsd-update fetch
 # freebsd-update install