diff --git a/lib/pkp b/lib/pkp
index 0b5bd6977f..9a8970e543 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 0b5bd6977f263dec1505b3a5e0fd16a53fb87bb6
+Subproject commit 9a8970e543bfa22222c9bcdb3ecc4f73d6ee8002