diff --git a/lib/pkp b/lib/pkp
index e708eced193..b191acdc62e 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit e708eced1931d7148ad4e41be14c18d70dcef780
+Subproject commit b191acdc62e0fbaa84447bc239cb9ef17c6381f1