diff --git a/lib/pkp b/lib/pkp
index 922eb775df..ecf81ba72f 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 922eb775dfa9a43d7f7fcbdcc3a19e4c557f920e
+Subproject commit ecf81ba72f15131ccc48fe89f4da5fadb2d2d5b3