diff --git a/lib/pkp b/lib/pkp
index 8ce7f2c453..b191acdc62 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 8ce7f2c4534d39610b9d0a8733acc57cee382c2f
+Subproject commit b191acdc62e0fbaa84447bc239cb9ef17c6381f1