diff --git a/notes-and-examples/2026.09.04/overview.md b/notes-and-examples/2026.09.04/overview.md
index 0d8e6b9..8b4f9bb 100644
--- a/notes-and-examples/2026.09.04/overview.md
+++ b/notes-and-examples/2026.09.04/overview.md
@@ -3,3 +3,5 @@
 We will go over the exercise from last week and start on [Python Packages](https://gitea.bchen.dev/brendan/python-packages-starter),
 a new assignment. For reference, this assignment is also in the Assignments section.
 
+Whiteboard for optimizing last week's assignment: https://excalidraw.com/#json=rd-1CkdxA2AMpQsiVOQkY,t7-KayQW3DntCDkXVktEJQ
+