diff --git a/doc/devel/release.html b/doc/devel/release.html
index 69a5741..c24de8e 100644
--- a/doc/devel/release.html
+++ b/doc/devel/release.html
@@ -120,6 +120,13 @@
 1.11.12 milestone</a> on our issue tracker for details.
 </p>
 
+<p>
+go1.11.13 (released 2019/08/13) includes security fixes to the
+<code>net/http</code> and <code>net/url</code> packages.
+See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.11.13">Go
+1.11.13 milestone</a> on our issue tracker for details.
+</p>
+
 <h2 id="go1.10">go1.10 (released 2018/02/16)</h2>
 
 <p>