diff --git a/doc/src/sgml/release-12.sgml b/doc/src/sgml/release-12.sgml
new file mode 100644
index 57365c5..4c55656
*** a/doc/src/sgml/release-12.sgml
--- b/doc/src/sgml/release-12.sgml
*************** Author: Andrew Dunstan <andrew@dunslane.
*** 2833,2838 ****
--- 2833,2852 ----
         </para>
        </listitem>
  
+      <listitem>
+ <!--
+ Author: Michael Paquier <michael@paquier.xyz>
+ 2018-09-14 [0ba06e0bf] Allow concurrent-safe open() and fopen() in frontend
+ 2018-09-20 [40cfe8606] Enforce translation mode for Windows frontends to text
+ -->
+ 
+       <para>
+        Fix <xref linkend="pgtestfsync"/> to report accurate
+        <literal>open_datasync</literal> durations on
+        <productname>Windows</productname> (Laurenz Albe)
+       </para>
+      </listitem>
+ 
       </itemizedlist>
  
      </sect4>