diff --git a/lib/pkp b/lib/pkp
index e0e7a692bf1..820d5a1359c 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit e0e7a692bf1823ada0ee088bb1a6b7c4f9e8d5b9
+Subproject commit 820d5a1359c5d4cabb25a29e5d680d2e001f3dec