diff --git a/_extensions/odoo/translator.py b/_extensions/odoo/translator.py
index a72d5b6e6..9e9dfd981 100644
--- a/_extensions/odoo/translator.py
+++ b/_extensions/odoo/translator.py
@@ -646,7 +646,7 @@ class BootstrapTranslator(nodes.NodeVisitor, object):
             self.body.append(title if title else util.nodes.clean_astext(env.titles[ref]))
             self.body.append(u'</h2>')
 
-            entries = [(title, ref)] if not toc else ((e[0], e[1]) for e in toc[0]['entries'])
+            entries = [(title, ref)] if not toc else ((e[0], e[1]) for e in list(toc)[0]['entries'])
             for subtitle, subref in entries:
                 baseuri = self.builder.get_target_uri(node['parent'])
 
diff --git a/requirements.txt b/requirements.txt
index 95726293f..93abfad67 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 Sphinx>=2.4.0
-Werkzeug==0.14.1
\ No newline at end of file
+Werkzeug==0.14.1