diff --git a/lectures b/lectures
index d973d24..2a99527 160000
--- a/lectures
+++ b/lectures
@@ -1 +1 @@
-Subproject commit d973d24a8b4ee6978202eaaffe9391733948e252
+Subproject commit 2a995277f534028a0d558969eb9fd1e74b117395