diff --git a/lib/pkp b/lib/pkp
index 4a4b7f6b0d2..b5f0cf701c9 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 4a4b7f6b0d2b1ed7796a47ce90da9e8a647985fe
+Subproject commit b5f0cf701c90892c1b89169d07195fd1bee11b51