diff --git a/lectures b/lectures
index 5d0914d..a134aaf 160000
--- a/lectures
+++ b/lectures
@@ -1 +1 @@
-Subproject commit 5d0914decceab930ebfe4aee91a1e9377a6e161f
+Subproject commit a134aafefdf727b1202341d6cdd806c5f64c87ad