diff --git a/shelfsdk b/shelfsdk
index 8f90f97..8ad3a21 160000
--- a/shelfsdk
+++ b/shelfsdk
@@ -1 +1 @@
-Subproject commit 8f90f971fe87aebdabe80e36823356198420f3de
+Subproject commit 8ad3a21a14c394b2276b3fe54e762909fc9b8389