diff --git a/lib/pkp b/lib/pkp
index e955273ecd4..64250912c8e 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit e955273ecd4cdd3658f407e502d3c1f890b763a3
+Subproject commit 64250912c8efa52bcabc1b4882bb6e2fe184b0f2