diff --git a/latex-math/service/pre-commit-check-pdf b/latex-math/service/pre-commit-check-pdf
old mode 100755
new mode 100644
diff --git a/slides/advriskmin/chapter-order.tex b/slides/advriskmin/chapter-order.tex
index 31f98908..b883cf5f 100644
--- a/slides/advriskmin/chapter-order.tex
+++ b/slides/advriskmin/chapter-order.tex
@@ -58,3 +58,5 @@ \subsection{Loss Properties}
 \subsection{Bias Variance Decomposition}
 \includepdf[pages=-]{../slides-pdf/slides-advriskmin-bias-variance-decomposition.pdf}
 
+\subsection{Bias Variance Decomposition Deep Dive}
+\includepdf[pages=-]{../slides-pdf/slides-advriskmin-bias-variance-decomposition-deepdive.pdf}