diff --git a/ph-bookshelf b/ph-bookshelf
index 9965e18..bbbaffc 160000
--- a/ph-bookshelf
+++ b/ph-bookshelf
@@ -1 +1 @@
-Subproject commit 9965e18ad97b1ffe2f6cdf8d71027bb72013fcf9
+Subproject commit bbbaffcc0d4dbabeab07bfa496399ba16d16d1e4