diff --git a/lib/pkp b/lib/pkp
index 1b2cd5524cb..9a976571764 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 1b2cd5524cb4acf733295fa7cc4e17cd1bd14c7b
+Subproject commit 9a976571764082cd93fadeffda5e63d50aa94d46