diff --git a/lib/pkp b/lib/pkp
index b3967c900c1..7781b8a799b 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit b3967c900c1545c7ded4e7c8cd840931e03ab768
+Subproject commit 7781b8a799b5e218e42b56d52235691b4f55dfba