diff --git a/CKS-Lessons b/CKS-Lessons
index eaef1c1..a89b4ed 160000
--- a/CKS-Lessons
+++ b/CKS-Lessons
@@ -1 +1 @@
-Subproject commit eaef1c17a7430b75f78518caf2e8efb17f713910
+Subproject commit a89b4ed4c23e312f62a3a8649f177fbc951875f0