diff --git a/lectures b/lectures
index e72e8df..88d1f4a 160000
--- a/lectures
+++ b/lectures
@@ -1 +1 @@
-Subproject commit e72e8df7a5ed3403549b886083b46de29a078aee
+Subproject commit 88d1f4a93c636a1c45d65cccac3c4bb69db6f446