diff --git a/winsup/doc/ChangeLog b/winsup/doc/ChangeLog
index 3d0c05035..25246293b 100644
--- a/winsup/doc/ChangeLog
+++ b/winsup/doc/ChangeLog
@@ -1,3 +1,7 @@
+2013-06-02  Corinna Vinschen  <corinna@vinschen.de>
+
+	* new-features.xml (ov-new1.7.19): Add mandatory locking.
+
 2013-05-23  Warren Young  <warren@etr-usa.com>
 
 	* xidepend: New script, generates Makefile.dep from top-level XML
diff --git a/winsup/doc/new-features.xml b/winsup/doc/new-features.xml
index db8efc7de..d0a7d523a 100644
--- a/winsup/doc/new-features.xml
+++ b/winsup/doc/new-features.xml
@@ -26,6 +26,11 @@ option.
 Add support for AFS filesystem.
 </para></listitem>
 
+<listitem><para>
+Preliminary support for mandatory locking via fcntl, using Windows
+locking semantics.  New F_LCK_MANDATORY fcntl command.
+</para></listitem>
+
 <listitem><para>
 New APIs: __b64_ntop, __b64_pton, arc4random, arc4random_addrandom,
 arc4random_buf, arc4random_stir, arc4random_uniform.