diff --git a/mkdocs.yml b/mkdocs.yml
index 65466633d6..4fce5fb957 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -49,6 +49,7 @@ nav:
         - MEG systems: 99-appendices/07-meg-systems.md
         - Coordinate systems: 99-appendices/08-coordinate-systems.md
         - Entities: 99-appendices/09-entities.md
+        - File collections: 99-appendices/10-file-collections.md
       - Changelog: CHANGES.md
     - The BIDS Starter Kit:
       - GitHub repository: https://github.com/bids-standard/bids-starter-kit