diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index a48b55d..089c535 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -3,7 +3,8 @@
     "allow": [
       "Bash(git add:*)",
       "Bash(git commit:*)",
-      "Bash(cat:*)"
+      "Bash(cat:*)",
+      "WebFetch(domain:unicode-org.github.io)"
     ],
     "deny": [],
     "ask": []
diff --git a/site/config/config.php b/site/config/config.php
index 8e65d31..dfed172 100644
--- a/site/config/config.php
+++ b/site/config/config.php
@@ -2,6 +2,8 @@
 
 return [
   'debug' => true,
+  'locale' => 'fr_FR.UTF-8',
+  'date.handler'  => 'intl',
   'thumbs' => [
     'quality' => 80,
     'presets' => [
diff --git a/site/templates/investigations.php b/site/templates/investigations.php
index ddf413a..d2bef3f 100644
--- a/site/templates/investigations.php
+++ b/site/templates/investigations.php
@@ -38,7 +38,7 @@
         <?php if ($investigation->incidentDate()->isNotEmpty()): ?>
         <div class="dl__group">
             <dt>Date de l'incident</dt>
-            <dd><time datetime="<?= $investigation->incidentDate()->toDate('Y-m-d') ?>"><?= $investigation->incidentDate()->toDate('d F Y') ?></time></dd>
+            <dd><time datetime="<?= $investigation->incidentDate()->toDate('yyyy-MM-dd') ?>"><?= $investigation->incidentDate()->toDate('d MMMM yyyy', 'fr_FR') ?></time></dd>
         </div>
         <?php endif ?>