diff --git a/lib/pkp b/lib/pkp
index c765e41ff57..bb151c8c481 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit c765e41ff57b9dca0cd139d0de4ce711c5608c7a
+Subproject commit bb151c8c481fdef3f21ca279062afac2be388187