diff --git a/lib/pkp b/lib/pkp
index d15e9984d6d..1afaf57fd2a 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit d15e9984d6dad2f9264f37442f0b934a976dd383
+Subproject commit 1afaf57fd2a4e892667409f4560daab557ced039