diff --git a/lib/pkp b/lib/pkp
index ae703a5617..e9103831a9 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit ae703a5617211ac260103424cd9bdc05e15f92c9
+Subproject commit e9103831a9aa4b94d8e2ad4721cebfd35fbf8aff