diff --git a/lib/pkp b/lib/pkp
index 8bd5243a6e..af89f1502d 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 8bd5243a6e554acd88470d80d16460b09411c07c
+Subproject commit af89f1502d1234f73028b5f29e50ee232361fe65