diff --git a/lib/pkp b/lib/pkp
index 9bac544bf8..bb5ffca2ab 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 9bac544bf858c39150bdb430f66767205e905062
+Subproject commit bb5ffca2ab381e722e5540637e630ac7d6b0a368