diff --git a/lib/pkp b/lib/pkp
index a930f7b1aa..17b51e3afa 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit a930f7b1aadd4e537b5cfb19a1b7df564da3c279
+Subproject commit 17b51e3afaeb954d38d3d36aa2db5a71f9e37dca