diff --git a/_toc.yml b/_toc.yml
index a325deb1..a222480e 100644
--- a/_toc.yml
+++ b/_toc.yml
@@ -2,17 +2,19 @@
 # Learn more at https://jupyterbook.org/customize/toc.html
 #
 - file: index
-- file: admin-guide/architecture
+- file: admin-guide/index
   sections:
-      - file: admin-guide/architecture/overview
-      - file: admin-guide/architecture/accounts-and-groups
-      - file: admin-guide/architecture/authentication-authorization
-      - file: admin-guide/architecture/networking
-      - file: admin-guide/architecture/services-cron-etc
-      - file: admin-guide/architecture/version-control
-      - file: admin-guide/architecture/security
-      - file: admin-guide/architecture/active-directory
-      - file: admin-guide/architecture/certificates
+  - file: admin-guide/architecture
+    sections:
+        - file: admin-guide/architecture/overview
+        - file: admin-guide/architecture/accounts-and-groups
+        - file: admin-guide/architecture/authentication-authorization
+        - file: admin-guide/architecture/networking
+        - file: admin-guide/architecture/services-cron-etc
+        - file: admin-guide/architecture/version-control
+        - file: admin-guide/architecture/security
+        - file: admin-guide/architecture/active-directory
+        - file: admin-guide/architecture/certificates
 
 #     - file: user_standard_infrastructure
 #     - file: user_standard_directory_structure