diff --git a/lib/pkp b/lib/pkp
index b8d985fb8ba..f28675c1152 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit b8d985fb8baebe981935ba2175616c6fd1a923b8
+Subproject commit f28675c1152856bf8c289d5f98ae580bfc59829c