diff --git a/lib/pkp b/lib/pkp
index 8c9fb08b34c..781e7df794e 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 8c9fb08b34cbd7e1bbb72e9a5ebf8df6933c403a
+Subproject commit 781e7df794e2b3b1705b0339b25e26d0cb8351e6