diff --git a/ph-bookshelf b/ph-bookshelf
index d901f62..5c9cf4d 160000
--- a/ph-bookshelf
+++ b/ph-bookshelf
@@ -1 +1 @@
-Subproject commit d901f626d49a6de24cea463b1faf0339180cccd6
+Subproject commit 5c9cf4d4ae301090efa5fe77bdd5265c9586db96