diff --git a/lib/pkp b/lib/pkp
index 8ee8bceee5..4d85c0feee 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 8ee8bceee5afcac37547445b85bfbfa9e66a1270
+Subproject commit 4d85c0feee944902581c69d645cc59c5602dc714