diff --git a/pages/12.training-materials/chapter.md b/pages/12.training-materials/chapter.md
index a8530a0..9e87c65 100644
--- a/pages/12.training-materials/chapter.md
+++ b/pages/12.training-materials/chapter.md
@@ -6,4 +6,5 @@ title: 'Training Materials'
 2. [Beer](./beer)
 3. [Better Service = Better Tips](./better-service-better-tips)
 4. [Brandy / Cognac / Armagnac](./brandy)
-5. [Cocktail Glossary](./cocktail-glossary)
\ No newline at end of file
+5. [Cocktail Glossary](./cocktail-glossary)
+6. [Complaint Handling](./complaint-handling)
\ No newline at end of file