diff --git a/mkdocs.template.yml b/mkdocs.template.yml
index 7fd1386..a5dc5a2 100644
--- a/mkdocs.template.yml
+++ b/mkdocs.template.yml
@@ -39,8 +39,10 @@ extra_javascript: []
 markdown_extensions:
   - smarty
   - admonition
-  - codehilite(guess_lang=true)
-  - toc(permalink=true)
+  - codehilite:
+      guess_lang: true
+  - toc:
+      permalink: true
 copyright: '© 2009 - 2019 Icinga GmbH'
 google_analytics:
   - 'UA-280659-15'