diff --git a/lib/pkp b/lib/pkp
index dbb8b9a4be..b191acdc62 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit dbb8b9a4be586e471bd0348be9cd332d0f7651f9
+Subproject commit b191acdc62e0fbaa84447bc239cb9ef17c6381f1