diff --git a/lib/pkp b/lib/pkp
index 7e2ca79fc71..ae6f23a5453 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 7e2ca79fc7161f82e373f01040bd09bc06163d87
+Subproject commit ae6f23a545385a13d03c2a4e82b6b016309f3f72