diff --git a/mkdocs.yml b/mkdocs.yml
index 38cc5b1..59df162 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -27,9 +27,9 @@ markdown_extensions:
     - meta
     - pymdownx.details
     - pymdownx.highlight:
-      anchor_linenums: true
-      line_spans: __span
-      pygments_lang_class: true
+          anchor_linenums: true
+          line_spans: __span
+          pygments_lang_class: true
     - pymdownx.inlinehilite
     - pymdownx.snippets
     - pymdownx.superfences