diff --git a/lib/pkp b/lib/pkp
index 0194be3b0b..8d7d4c7936 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 0194be3b0bfa2425d5283bfb03e0e9f650d10f76
+Subproject commit 8d7d4c7936dcfa1e3ed002f569a2ec4c149f4cae