diff --git a/doc/go1.13.html b/doc/go1.13.html
index 84404104df..d0fae49092 100644
--- a/doc/go1.13.html
+++ b/doc/go1.13.html
@@ -265,6 +265,11 @@ TODO
 
 <dl id="os"><dt><a href="/pkg/os/">os</a></dt>
   <dd>
+    <p><!-- CL 160877 -->
+      The new <a href="/pkg/os/#UserConfigDir"><code>UserConfigDir</code></a> function
+      returns the default directory to use for user-specific configuration data.
+    </p>
+
     <p><!-- CL 166578 -->
       If a <a href="/pkg/os/#File"><code>File</code></a> is opened using the O_APPEND flag, its
       <a href="/pkg/os/#File.WriteAt"><code>WriteAt</code></a> method will always return an error.