diff --git a/source/conf.py b/source/conf.py
index 5ad4bcd..13ca9ab 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -146,7 +146,7 @@ html_theme_options = {
     ],
     "mastodon_user": "@kujiu@tiphon.nerv-project.eu",
     "fathom": {
-        'url': '//casanabo.kujiu.eu',
+        'url': 'https://casanabo.kujiu.eu',
         'id': 'JKNYR',
     },
     'isso': {