diff --git a/site/_toc.yml b/site/_toc.yml
index 8ab45130..9f3eb316 100644
--- a/site/_toc.yml
+++ b/site/_toc.yml
@@ -69,7 +69,7 @@ parts:
   - file: ../modules/13_transformers/ABOUT
     title: "13. Transformers"
 
-- caption: ⚡ Optimization Tier (14-19)
+- caption: ⚡ Optimization Tier (14-20)
   chapters:
   - file: ../modules/14_profiling/ABOUT
     title: "14. Profiling"