diff --git a/lib/pkp b/lib/pkp
index 897d263cc34..7599cd3bbd6 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 897d263cc341f90bccb4f948196bdb59e43160d8
+Subproject commit 7599cd3bbd62b8c4de1385b560e08848346521ee