From 551a55acd7b8cff6b099cfe9922ed7ce116a45f6 Mon Sep 17 00:00:00 2001
From: Florian Latzel <florian.latzel@gmail.com>
Date: Fri, 18 Jun 2021 09:23:43 +0200
Subject: [PATCH] Added property 'article:modified_time'.

---
 lib/template.html | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/template.html b/lib/template.html
index bc507e7..b6788af 100755
--- a/lib/template.html
+++ b/lib/template.html
@@ -44,6 +44,10 @@
   <meta property="article:published_time" content="{{ page.date | date_to_xmlschema }}" />
 {% endif %}
 
+{% if page.last_modified_at %}
+  <meta property="article:modified_time" content="{{ page.last_modified_at | date_to_xmlschema }}" />
+{% endif %}
+
 {% if paginator.previous_page %}
   <link rel="prev" href="{{ paginator.previous_page_path | absolute_url }}" />
 {% endif %}