diff --git a/lectures b/lectures
index 59a7b4c..b5afeb3 160000
--- a/lectures
+++ b/lectures
@@ -1 +1 @@
-Subproject commit 59a7b4c9313ac31dafd304533934240511089628
+Subproject commit b5afeb38889f317faa0796b4e1e76854212aaa2b