diff --git a/lib/pkp b/lib/pkp
index f29ce267fba..4c0c5a758f8 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit f29ce267fbacc8d9285f0454079a50fabf44b235
+Subproject commit 4c0c5a758f85347d224546e67dcd3c9f30bfde0a