diff --git a/lib/pkp b/lib/pkp
index 5803e4fefa1..56424d4cb58 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 5803e4fefa145b89740bb8ea8dbf2434939fe213
+Subproject commit 56424d4cb58eb7bfa1dada1e4138dc38a4649bd1