diff --git a/mkdocs.yml b/mkdocs.yml
index e8cd5d0940cca3c1d3b3c87d7ce59e74a5f9e58e..a53ecd5f085cb468523618ff75be3b1f3b41339f 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -11,6 +11,7 @@ nav:
   - Vector spaces: '3_vector_spaces.md'
   - Vector spaces in quantum mechanics: '4_vector_spaces_QM.md'
   - Operators in quantum mechanics: '5_operators_QM.md'
+  - Eigenvectors and eigenvalues: '6_eigenvectors_QM.md'
 theme:
   name: material
   custom_dir: theme