diff --git a/lib/pkp b/lib/pkp
index 188bba290b9..313d5a4aa00 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 188bba290b9e8e2b158891e71cd262d484d944af
+Subproject commit 313d5a4aa00170abbde5beea3475fb61ac94679d