diff --git a/reference/filesystem/functions/flock.xml b/reference/filesystem/functions/flock.xml
index 604f1f60bf..4bf606a0c2 100644
--- a/reference/filesystem/functions/flock.xml
+++ b/reference/filesystem/functions/flock.xml
@@ -77,7 +77,7 @@
      <listitem>
       <para>
        The optional third argument is set to 1 if the lock would block
-       (EWOULDBLOCK errno condition). (not supported on Windows)
+       (EWOULDBLOCK errno condition).
       </para>
      </listitem>
     </varlistentry>
@@ -104,6 +104,13 @@
       </row>
      </thead>
      <tbody>
+      <row>
+       <entry>5.5.22, 5.6.6</entry>
+       <entry>
+        Added support for the <parameter>wouldblock</parameter> parameter on
+        Windows.
+       </entry>
+      </row>      
       <row>
        <entry>5.3.2</entry>
        <entry>