diff --git a/books/pru-cookbook/code b/books/pru-cookbook/code
index 155c7a92ca8352a75c97beb7d54ce022220d4f03..291223f2c9b360dd3c6f19d40a3e9c0199c5c78f 160000
--- a/books/pru-cookbook/code
+++ b/books/pru-cookbook/code
@@ -1 +1 @@
-Subproject commit 155c7a92ca8352a75c97beb7d54ce022220d4f03
+Subproject commit 291223f2c9b360dd3c6f19d40a3e9c0199c5c78f