diff --git a/lib/pkp b/lib/pkp
index 1f78b8f3530..e454789152e 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 1f78b8f3530869be44ceb4aec77239e375548b18
+Subproject commit e454789152e45eed8585142c9b2aca91193f1a40