diff --git a/book/_toc.yml b/book/_toc.yml
index 9cb8586..b79443a 100644
--- a/book/_toc.yml
+++ b/book/_toc.yml
@@ -29,4 +29,5 @@ parts:
         - file: notebooks/CHL_prediction_ConvLSTM_.ipynb
           title: Fit ConvLSTM
         - file: notebooks/silver_signal_noise.pdf
+          title: test
           
\ No newline at end of file