diff --git a/ReleaseNotes.html b/ReleaseNotes.html
index 76cd763a99..63364933b5 100644
--- a/ReleaseNotes.html
+++ b/ReleaseNotes.html
@@ -22,7 +22,7 @@ <h1>Wt Release notes</h1>
 the way you build Wt, the way you configure Wt or the Wt API and
 behaviour.
 
-<h2>Release 4.0.4 (2018)</h2>
+<h2>Release 4.0.4 (August 22, 2018)</h2>
 <p>This release brings with it the usual bugfixes, but also some new features:</p>
 
 <h3>WCartesianChart improvements</h3>