diff --git a/lib/pkp b/lib/pkp
index 9178e9a259..454635a0e7 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 9178e9a25928be30558b40d487ee5eb395df1a55
+Subproject commit 454635a0e7179040305bfb0c9d511db4e95de6c0