diff --git a/Lectures/Presentations b/Lectures/Presentations
index c66b592..314f346 160000
--- a/Lectures/Presentations
+++ b/Lectures/Presentations
@@ -1 +1 @@
-Subproject commit c66b5928fa695cc0f44cfd811b5d770c65eeecaa
+Subproject commit 314f34638a4d6a93dadd253a2f9a8cde30841f93