diff --git a/book/_toc.yml b/book/_toc.yml
index 6abc4d6..9d90ec0 100644
--- a/book/_toc.yml
+++ b/book/_toc.yml
@@ -11,7 +11,8 @@ parts:
       - file: thesis_projects/BSc/2023_Q4_GeltSteiger_CEG/methods_BSc_GeltSteiger.ipynb
   - caption: Tutorials
     maxdepth: 1
-      - file: tutorials_examples/intro_tutorials_examples.md
+    chapters:
+    - file: tutorials_examples/intro_tutorials_examples.md
       sections:
       - file: tutorials_examples/1_HBV_Caravan_ERA5/example_model_run_HBV.ipynb
       - file: tutorials_examples/2_HBV_PCRGlobWB_ERA5/example_model_run_pcrglobwb.ipynb