diff --git a/lib/pkp b/lib/pkp
index cc2d2530e6d..4a450bbce0a 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit cc2d2530e6d4b6badf12838f19bebef42b002533
+Subproject commit 4a450bbce0a95ed599050451b5abd049329686ef