diff --git a/lib/pkp b/lib/pkp
index 7b768133b5a..533420f0be2 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 7b768133b5a5276010f78feb1ee2b6d4d30d9c84
+Subproject commit 533420f0be2b83c0d79f0c886cb993f302027a03