diff --git a/lib/pkp b/lib/pkp
index 645d56af5c..8f7bc9ad34 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 645d56af5cd53f8a673b60eb33ff83645d638fe9
+Subproject commit 8f7bc9ad343a5b599aeb005908d6e1de14550d3e