diff --git a/lib/pkp b/lib/pkp
index 0194be3b0b..3553f9497b 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 0194be3b0bfa2425d5283bfb03e0e9f650d10f76
+Subproject commit 3553f9497bff2f21eba77dfbc27ff2c1b2b97e0b