diff --git a/lib/pkp b/lib/pkp
index 6882fa48c8..af501d2e3d 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 6882fa48c8bc68992843ab07d010bd6303f77d4d
+Subproject commit af501d2e3d0bcec2b0b57986349bc1280f21b6dc