diff --git a/lib/pkp b/lib/pkp
index 1b7cd82a866..c78b9bf709c 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 1b7cd82a86695db5c5246127371001bdd5ea1ccf
+Subproject commit c78b9bf709cf6f9fe1313289d070f738f1bd9bdd