diff --git a/lib/pkp b/lib/pkp
index d1ac98543e1..55e89edc73f 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit d1ac98543e16f7b0c728d32146b570a5415421a3
+Subproject commit 55e89edc73fef202eb756b05cd0f7b0630b0a53e