diff --git a/ale-exercise-book b/ale-exercise-book
index c328b2c..9283739 160000
--- a/ale-exercise-book
+++ b/ale-exercise-book
@@ -1 +1 @@
-Subproject commit c328b2c11b310ab6c27d0e507388cd8fee9cb21e
+Subproject commit 9283739f54788e71456cc976208eb35742815491