diff --git a/lib/pkp b/lib/pkp
index 33fd288afc1..2fd4f04cf55 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 33fd288afc1c0260e4f6d837d08aeb4615ad191d
+Subproject commit 2fd4f04cf55884da9ed1d77a9815c4ab36d47b52