diff --git a/doc/src/sgml/release-9.4.sgml b/doc/src/sgml/release-9.4.sgml
index 24862fe..189878b 100644
--- a/doc/src/sgml/release-9.4.sgml
+++ b/doc/src/sgml/release-9.4.sgml
@@ -307,6 +307,15 @@
 
     <listitem>
      <para>
+      <link linkend="bgworker">background workers</link> registered at
+       postmaster startup time should set <structfield>bgw_notify_pid</structfield>
+       to 0.
+      <command></>
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
       <command>DISCARD ALL</> now also discards sequence state.
      </para>
     </listitem>