diff --git a/_modules/week-10.md b/_modules/week-10.md
index b812df5..c8d7cf2 100644
--- a/_modules/week-10.md
+++ b/_modules/week-10.md
@@ -5,7 +5,7 @@ title: Week 10
 
 Oct 29
 : **Lecture 18**{: .label .label-lecture} Estimators, Bias, and Variance
-: **Discussion 9**{: .label .label-disc } Cross-Validation and Regularization
+: **Discussion 9**{: .label .label-disc } [Cross-Validation and Regularization](https://drive.google.com/file/d/1asMcoIisAkk9zTX4nSUazVm6ToPjfBRT/view?usp=sharing){:target="_blank"}
 
 Oct 31
 : **Lecture 19**{: .label .label-lecture} Parameter Inference & the Bootstrap