diff --git a/doc/src/sgml/release-13.sgml b/doc/src/sgml/release-13.sgml
index 3fd97c9d10..0dd6104f55 100644
--- a/doc/src/sgml/release-13.sgml
+++ b/doc/src/sgml/release-13.sgml
@@ -3453,6 +3453,7 @@ Author: Peter Geoghegan <pg@bowt.ie>
     <member>Ryohei Takahashi</member>
     <member>Scott Ribe</member>
     <member>Sean Farrell</member>
+    <member>Sean Massey</member>
     <member>Sehrope Sarkuni</member>
     <member>Sergei Agalakov</member>
     <member>Sergei Kornilov</member>