diff --git a/runtime/indent/html.vim b/runtime/indent/html.vim
index 1d2043a..c99eb28 100644
--- a/runtime/indent/html.vim
+++ b/runtime/indent/html.vim
@@ -2,7 +2,7 @@
 " Header: "{{{
 " Maintainer:	Bram Moolenaar
 " Original Author: Andy Wokula <anwoku@yahoo.de>
-" Last Change:	2019 Mar 20
+" Last Change:	2020 Jun 18
 " Version:	1.0
 " Description:	HTML indent script with cached state for faster indenting on a
 "		range of lines.
@@ -223,7 +223,7 @@
 call s:AddITags(s:indent_tags, [
     \ 'a', 'abbr', 'acronym', 'address', 'b', 'bdo', 'big',
     \ 'blockquote', 'body', 'button', 'caption', 'center', 'cite', 'code',
-    \ 'colgroup', 'del', 'dfn', 'dir', 'div', 'dl', 'em', 'fieldset', 'font',
+    \ 'colgroup', 'dd', 'del', 'dfn', 'dir', 'div', 'dl', 'dt', 'em', 'fieldset', 'font',
     \ 'form', 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'html',
     \ 'i', 'iframe', 'ins', 'kbd', 'label', 'legend', 'li',
     \ 'map', 'menu', 'noframes', 'noscript', 'object', 'ol',
diff --git a/runtime/indent/testdir/html.in b/runtime/indent/testdir/html.in
index 9c776d6..80ce0cd 100644
--- a/runtime/indent/testdir/html.in
+++ b/runtime/indent/testdir/html.in
@@ -23,4 +23,14 @@
 text
 </div>
 
+<dl>
+<dd>
+dd text
+</dd>
+<dt>
+dt text
+</dt>
+</dl>
+
+
 " END_INDENT
diff --git a/runtime/indent/testdir/html.ok b/runtime/indent/testdir/html.ok
index ad81933..a96141f 100644
--- a/runtime/indent/testdir/html.ok
+++ b/runtime/indent/testdir/html.ok
@@ -23,4 +23,14 @@
     text
 </div>
 
+<dl>
+    <dd>
+	dd text
+    </dd>
+    <dt>
+	dt text
+    </dt>
+</dl>
+
+
 " END_INDENT