diff --git a/lib/pkp b/lib/pkp
index 4dd73c40f66..40c9b7ea230 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 4dd73c40f66cb10d117d2d93d76a345795ead043
+Subproject commit 40c9b7ea230869944cbd922cc523e5890970f419