diff --git a/lectures b/lectures
index f09537b..456084d 160000
--- a/lectures
+++ b/lectures
@@ -1 +1 @@
-Subproject commit f09537b866bfbdd70f54c00149152cca0560fa91
+Subproject commit 456084daa65cd8b364c22341587fbee8e91d531b