diff --git a/lib/pkp b/lib/pkp
index 4785a6129a..77a009c475 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 4785a6129ae1190d6abf31acbc9cad99ecccbe1e
+Subproject commit 77a009c4757c9ae395d0ed033e9887dfc34d36fc