diff --git a/lib/pkp b/lib/pkp
index 92c16557e00..6d77c1c3470 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 92c16557e009d44bda5abd781303f01fe4c0f5db
+Subproject commit 6d77c1c3470b6bb86f6c0199a255b39a473d5616