diff --git a/src/_config/collections.js b/src/_config/collections.js
index 8e4be3a..356d6ed 100644
--- a/src/_config/collections.js
+++ b/src/_config/collections.js
@@ -5,7 +5,7 @@ export const getAllPosts = collection => {
 
 /** All markdown files as a collection for sitemap.xml */
 export const onlyMarkdown = collection => {
-  return collection.getFilteredByGlob('./src/**/*.md');
+  return collection.getFilteredByGlob('./src/**/*.{md,njk}');
 };
 
 /** All tags from all posts as a collection - excluding custom collections */