diff --git a/Lectures/Presentations b/Lectures/Presentations
index 103a58c..b030af6 160000
--- a/Lectures/Presentations
+++ b/Lectures/Presentations
@@ -1 +1 @@
-Subproject commit 103a58c874ac1fe1b5129b3e97f7bcb15a9ffaad
+Subproject commit b030af68d13f537872ea3ebca9179c6ad638954e