diff --git a/master.html b/master.html
index e26aa518..f2f4503b 100644
--- a/master.html
+++ b/master.html
@@ -910,6 +910,12 @@ entry.</p>
 <p>Message displayed in the client when a password is needed.</p>
 <p>Default: <code>Radicale - Password Required</code></p>
 </section>
+<section class="level5" id="lc_username">
+<h5>lc_username <a class="headerlink" href="#lc_username">&para;</a></h5>
+<p>&Scy;onvert username to lowercase, must be true for case-insensitive auth
+providers like ldap, kerberos</p>
+<p>Default: <code>False</code></p>
+</section>
 </section>
 <section class="level4" id="rights">
 <h4>rights <a class="headerlink" href="#rights">&para;</a></h4>