diff --git a/lectures b/lectures
index e72eb6d..b16875c 160000
--- a/lectures
+++ b/lectures
@@ -1 +1 @@
-Subproject commit e72eb6d5e22fdef1e1121a37a3c115fcd45c8616
+Subproject commit b16875ca9a882d031215e89c1a1ee171c1994e8c