diff --git a/source/_templates/page.html b/source/_templates/page.html
new file mode 100644
index 0000000..5ab4d45
--- /dev/null
+++ b/source/_templates/page.html
@@ -0,0 +1,18 @@
+{% extends "!page.html" %}
+{% block body %}
+{% if current_version and latest_version and current_version != latest_version %}
+<div class="warning admonition">
+	<p class="admonition-title">Attention</p>
+	<p>
+		{% if current_version.is_released %}
+		Ceci est une ancienne version de la documentation.
+		La dernière version est la <a href="{{ vpathto(latest_version.name) }}">{{latest_version.name}}</a>.
+		{% else %}
+		Ceci est une version en cours de développement.
+		La dernière version stable est la <a href="{{ vpathto(latest_version.name) }}">{{latest_version.name}}</a>.
+		{% endif %}
+	</p>
+</div>
+{% endif %}
+{{ super() }}
+{% endblock %}
diff --git a/source/conf.py b/source/conf.py
index 82f72ec..b33db6e 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -67,5 +67,6 @@ html_theme_options = {
 
 # sphinx-multiversion settings
 smv_branch_whitelist = r'^main$'
-smv_tag_whitelist = r'^v[0-9\.]+$'
-smv_released_pattern = r'^tags/.*$'
+smv_tag_whitelist = r'^v[\d\.]+$'
+smv_released_pattern = r'.*tags/v[\d\.]+'
+smv_latest_version = 'v1.0.0'