diff --git a/books/tfgrid4/SUMMARY.md b/books/tfgrid4/SUMMARY.md
index 5e6efa2..52a749a 100644
--- a/books/tfgrid4/SUMMARY.md
+++ b/books/tfgrid4/SUMMARY.md
@@ -30,7 +30,7 @@
   - [Decentralized Cloud](solutions/cloud/cloud.md)
   - [Content Providers](solutions/content_providers/content_providers.md)
   - [Web4](web4/web4.md)
-- [Tech](tech/tech.md)
+- [Tech](tech/technology.md)
   - [Key Innovations](tech/key_innovations.md)
 - [Vision](values/values.md)
   - [Planet and People First](values/planet_people_first.md)