diff --git a/lib/pkp b/lib/pkp
index 1e66eccb0a3..7f21cf1b46d 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 1e66eccb0a36ca1fbaf56b25ecc61d3a36829702
+Subproject commit 7f21cf1b46d8eb84f011634d752414303b493f00