diff --git a/lib/pkp b/lib/pkp
index 77965606ca3..188bba290b9 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 77965606ca3ced2a7eba4be0e6876eb7a4f054a2
+Subproject commit 188bba290b9e8e2b158891e71cd262d484d944af