diff --git a/README.markdown b/README.markdown
index 1d11e486..e525d4b1 100644
--- a/README.markdown
+++ b/README.markdown
@@ -99,8 +99,10 @@ with: `go build`.
 * 5936 - AXFR
 * 6605 - ECDSA
 * 6742 - ILNP DNS
+* 6891 - EDNS0 update
 * xxxx - URI record (draft)
 * xxxx - EDNS0 DNS Update Lease (draft)
+* xxxx - IEU48/IEU64 records (draft)
 
 ## Loosely based upon
 
diff --git a/msg.go b/msg.go
index 7a489878..9d200244 100644
--- a/msg.go
+++ b/msg.go
@@ -184,6 +184,7 @@ var RcodeToString = map[int]string{
 	RcodeNotAuth:        "NOTAUTH",
 	RcodeNotZone:        "NOTZONE",
 	RcodeBadSig:         "BADSIG",
+	RcodeBadVers:        "BADVERS",
 	RcodeBadKey:         "BADKEY",
 	RcodeBadTime:        "BADTIME",
 	RcodeBadMode:        "BADMODE",