diff --git a/lib/pkp b/lib/pkp
index b929f534bda..874c3de9a5a 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit b929f534bda8909ed411c1340a275476a609a26c
+Subproject commit 874c3de9a5a98dd0f174e3c39788661a81bf2952