diff --git a/lib/pkp b/lib/pkp
index 22d5c79da2..874c3de9a5 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 22d5c79da2f7ddf47ca6520aee410da492442640
+Subproject commit 874c3de9a5a98dd0f174e3c39788661a81bf2952