diff --git a/lib/pkp b/lib/pkp
index 1824f2d09e4..ec81829439d 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 1824f2d09e49af9d79a303e492cca53f98bb2496
+Subproject commit ec81829439d81de0c59fa5aeff501fb0d832a351