diff --git a/doc-source/_templates/base.html b/doc-source/_templates/base.html
new file mode 100644
index 0000000..b101b24
--- /dev/null
+++ b/doc-source/_templates/base.html
@@ -0,0 +1,5 @@
+<!--- This file is managed by 'repo_helper'. Don't edit it directly. --->
+{% extends "!base.html" %}
+{% block extrahead %}
+	<link href="{{ pathto("_static/style.css", True) }}" rel="stylesheet" type="text/css">
+{% endblock %}
diff --git a/doc-source/_templates/sidebar/navigation.html b/doc-source/_templates/sidebar/navigation.html
new file mode 100644
index 0000000..91c4e00
--- /dev/null
+++ b/doc-source/_templates/sidebar/navigation.html
@@ -0,0 +1,12 @@
+<!---This file is managed by 'repo_helper'. Don't edit it directly.--->
+<div class="sidebar-tree">
+  {{ furo_navigation_tree }}
+</div>
+
+<div class="sidebar-tree">
+  <p class="caption"><span class="caption-text">Links</span></p>
+  <ul>
+    <li class="toctree-l1"><a class="reference external" href="https://github.com/domdfcoding/importcheck">GitHub</a></li>
+    <li class="toctree-l1"><a class="reference external" href="https://pypi.org/project/importcheck">PyPI</a></li>
+  </ul>
+</div>