diff --git a/Makefile b/Makefile
index 4085732..4121fa3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 #
 # built using mmark 2.
 
-VERSION = 36
+VERSION = 37
 DOCNAME = draft-ietf-dmarc-dmarcbis
 #XMLFLAGS=-v
 
diff --git a/draft-ietf-dmarc-dmarcbis.md b/draft-ietf-dmarc-dmarcbis.md
index 68df451..f358555 100644
--- a/draft-ietf-dmarc-dmarcbis.md
+++ b/draft-ietf-dmarc-dmarcbis.md
@@ -2813,7 +2813,9 @@ in detail in this document.
 The DNS Tree Walk also incorporates PSD policy discovery, which was introduced in 
 [@RFC9091]. That RFC was an Experimental RFC, and the results of that experiment were 
 that the RFC was not implemented as written. Instead, this document redefines the 
-algorithm for PSD policy discovery, and thus obsoletes [@RFC9091].
+algorithm for PSD policy discovery, and thus obsoletes [@RFC9091]. Specifically, the 
+DNS Tree Walk defined in this document obviates the need for a PSD DMARC registry,
+and that PSD DMARC regisry is what made RFC 9091 and Experimental RFC.
 
 These algorithm changes introduce the possibility of interoperability issues where a
 Domain Owner expects a DMARC Policy or an Organizational Domain to be identified by