diff --git a/draft-ietf-httpbis-http2-secondary-certs.md b/draft-ietf-httpbis-http2-secondary-certs.md
index 8691d70fb..5c433d9ee 100644
--- a/draft-ietf-httpbis-http2-secondary-certs.md
+++ b/draft-ietf-httpbis-http2-secondary-certs.md
@@ -856,7 +856,8 @@ this document.
 
 ## Since draft-ietf-httpbis-http2-secondary-certs-00:
 
-Nothing yet.
+- All frames sent on stream zero; replaced `AUTOMATIC_USE` on `CERTIFICATE` with
+  `UNSOLICITED` on `USE_CERTIFICATE`. (#482,#566)
 
 ## Since draft-bishop-httpbis-http2-additional-certs-05: