update

diff --git a/doc/rfc/index b/doc/rfc/index
index 7c1dfbc9ee7520ea69399cc71b208dc01d196160..34c63e820bd2fb52ce6f55bc048cef45f8edb2cb 100644 (file)
--- a/doc/rfc/index
+++ b/doc/rfc/index
@@ -111,6 +111,7 @@
 4408:  Sender Policy Framework (SPF) for Authorizing Use of Domains
         in E-Mail, Version 1
 4470:  Minimally Covering NSEC Records and DNSSEC On-line Signing
+4509:  Use of SHA-256 in DNSSEC Delegation Signer (DS) Resource Records (RRs)
 4634:  US Secure Hash Algorithms (SHA and HMAC-SHA)
 4641:  DNSSEC Operational Practices
 4648:  The Base16, Base32, and Base64 Data Encodings