diff --git a/partner_duns/static/description/index.html b/partner_duns/static/description/index.html
index 97ab11d2f8f..0b53e2efe4c 100644
--- a/partner_duns/static/description/index.html
+++ b/partner_duns/static/description/index.html
@@ -8,10 +8,11 @@
 
 /*
 :Author: David Goodger (goodger@python.org)
-:Id: $Id: html4css1.css 8954 2022-01-20 10:10:25Z milde $
+:Id: $Id: html4css1.css 9511 2024-01-13 09:50:07Z milde $
 :Copyright: This stylesheet has been placed in the public domain.
 
 Default cascading style sheet for the HTML output of Docutils.
+Despite the name, some widely supported CSS2 features are used.
 
 See https://docutils.sourceforge.io/docs/howto/html-stylesheets.html for how to
 customize this style sheet.
@@ -274,7 +275,7 @@
   margin-left: 2em ;
   margin-right: 2em }
 
-pre.code .ln { color: grey; } /* line numbers */
+pre.code .ln { color: gray; } /* line numbers */
 pre.code, code { background-color: #eeeeee }
 pre.code .comment, code .comment { color: #5C6576 }
 pre.code .keyword, code .keyword { color: #3B0D06; font-weight: bold }
@@ -300,7 +301,7 @@
 span.pre {
   white-space: pre }
 
-span.problematic {
+span.problematic, pre.problematic {
   color: red }
 
 span.section-subtitle {
@@ -417,7 +418,9 @@ <h2><a class="toc-backref" href="#toc-entry-4">Contributors</a></h2>
 <div class="section" id="maintainers">
 <h2><a class="toc-backref" href="#toc-entry-5">Maintainers</a></h2>
 <p>This module is maintained by the OCA.</p>
-<a class="reference external image-reference" href="https://odoo-community.org"><img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" /></a>
+<a class="reference external image-reference" href="https://odoo-community.org">
+<img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" />
+</a>
 <p>OCA, or the Odoo Community Association, is a nonprofit organization whose
 mission is to support the collaborative development of Odoo features and
 promote its widespread use.</p>
diff --git a/partner_duns/tests/test_partner_duns.py b/partner_duns/tests/test_partner_duns.py
index 2376d986d69..92cb3c190c0 100644
--- a/partner_duns/tests/test_partner_duns.py
+++ b/partner_duns/tests/test_partner_duns.py
@@ -2,10 +2,10 @@
 # @author Iván Todorovich <ivan.todorovich@camptocamp.com>
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
 
-from odoo.tests import Form, SavepointCase
+from odoo.tests import Form, TransactionCase
 
 
-class TestPartnerDuns(SavepointCase):
+class TestPartnerDuns(TransactionCase):
     @classmethod
     def setUpClass(cls):
         super().setUpClass()