diff --git a/lib/pkp b/lib/pkp
index 8eb50dfd24..1315d53d6c 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 8eb50dfd24ef6dccec0640ccf7ba5a694f871996
+Subproject commit 1315d53d6ce68250fefb3adeef4c702576d64819